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README.md

Carbon

English | Chinese

Introduction

A simple, semantic and developer-friendly golang package for datetime

If you think it is helpful, please give me a star

github:github.com/golang-module/carbon

gitee:gitee.com/go-package/carbon

Installation

// By github
go get -u github.com/golang-module/carbon

import (
    "github.com/golang-module/carbon"
)

// By gitee
go get -u gitee.com/go-package/carbon

import (
    "gitee.com/go-package/carbon"
)

Usage and example

The default timezone is Local, assuming the current time is 2020-08-05 13:14:15

Yesterday, today and tomorrow

// Datetime of today
fmt.Sprintf("%s", carbon.Now()) // 2020-08-05 13:14:15
carbon.Now().ToDateTimeString() // 2020-08-05 13:14:15
// Date of today
carbon.Now().ToDateString() // 2020-08-05
// Time of today
carbon.Now().ToTimeString() // 13:14:15
// Timestamp with second of today
carbon.Now().ToTimestamp() // 1596604455
carbon.Now().ToTimestampWithSecond() // 1596604455
// Timestamp with millisecond of today
carbon.Now().ToTimestampWithMillisecond() // 1596604455000
// Timestamp with microsecond of today
carbon.Now().ToTimestampWithMicrosecond() // 1596604455000000
// Timestamp with nanosecond of today
carbon.Now().ToTimestampWithNanosecond() // 1596604455000000000
// Datetime of today in given timezone
carbon.Now(Carbon.NewYork).ToDateTimeString() // 2020-08-05 14:14:15
carbon.SetTimezone(Carbon.NewYork).Now().ToDateTimeString() // 2020-08-05 14:14:15

// Datetime of yesterday 
fmt.Sprintf("%s", carbon.Yesterday()) // 2020-08-04 13:14:15
carbon.Yesterday().ToDateTimeString() // 2020-08-04 13:14:15
// Date of yesterday
carbon.Yesterday().ToDateString() // 2020-08-04
// Time of yesterday
carbon.Yesterday().ToTimeString() // 13:14:15
// Timestamp with second of yesterday
carbon.Yesterday().ToTimestamp() // 1596518055
carbon.Yesterday().ToTimestampWithSecond() // 1596518055
// Timestamp with millisecond of yesterday
carbon.Yesterday().ToTimestampWithMillisecond() // 1596518055000
// Timestamp with microsecond of yesterday
carbon.Yesterday().ToTimestampWithMicrosecond() // 1596518055000000
// Timestamp with nanosecond of yesterday
carbon.Yesterday().ToTimestampWithNanosecond() // 1596518055000000000
// Datetime of yesterday in given day
carbon.Parse("2021-01-28 13:14:15").Yesterday().ToDateTimeString() // 2021-01-27 13:14:15
// Datetime of yesterday in given timezone
carbon.Yesterday(Carbon.NewYork).ToDateTimeString() // 2020-08-04 14:14:15
carbon.SetTimezone(Carbon.NewYork).Yesterday().ToDateTimeString() // 2020-08-04 14:14:15

// Datetime of tomorrow
fmt.Sprintf("%s", carbon.Tomorrow()) // 2020-08-06 13:14:15
carbon.Tomorrow().ToDateTimeString() // 2020-08-06 13:14:15
// Date of tomorrow
carbon.Tomorrow().ToDateString() // 2020-08-06
// Time of tomorrow
carbon.Tomorrow().ToTimeString() // 13:14:15
// Timestamp with second of tomorrow
carbon.Tomorrow().ToTimestamp() // 1596690855
carbon.Tomorrow().ToTimestampWithSecond() // 1596690855
// Timestamp with millisecond of tomorrow
carbon.Tomorrow().ToTimestampWithMillisecond() // 1596690855000
// Timestamp with microsecond of tomorrow
carbon.Tomorrow().ToTimestampWithMicrosecond() // 1596690855000000
// Timestamp with nanosecond of tomorrow
carbon.Tomorrow().ToTimestampWithNanosecond() // 1596690855000000000
// Datetime of tomorrow in given day
carbon.Parse("2021-01-28 13:14:15").Tomorrow().ToDateTimeString() // 2021-01-29 13:14:15
// Datetime of tomorrow in given timezone
carbon.Tomorrow(Carbon.NewYork).ToDateTimeString() // 2020-08-06 14:14:15
carbon.SetTimezone(Carbon.NewYork).Tomorrow().ToDateTimeString() // 2020-08-06 14:14:15

Create carbon instance

// Create carbon instance from timestamp with second
carbon.CreateFromTimestamp(-1).ToDateTimeString() // 1970-01-01 07:59:59
carbon.CreateFromTimestamp(-1, carbon.Tokyo).ToDateTimeString() // 1970-01-01 08:59:59
carbon.CreateFromTimestamp(0).ToDateTimeString() // 1970-01-01 08:00:00
carbon.CreateFromTimestamp(0, carbon.Tokyo).ToDateTimeString() // 1970-01-01 09:00:00
carbon.CreateFromTimestamp(1596604455).ToDateTimeString() // 2020-08-05 13:14:15
carbon.CreateFromTimestamp(1596604455, carbon.Tokyo).ToDateTimeString() // 2020-08-05 14:14:15
// Create carbon instance from timestamp with millisecond
carbon.CreateFromTimestamp(1596604455000).ToDateTimeString() // 2020-08-05 13:14:15
carbon.CreateFromTimestamp(1596604455000, carbon.Tokyo).ToDateTimeString() // 2020-08-05 14:14:15
// Create carbon instance from timestamp with microsecond
carbon.CreateFromTimestamp(1596604455000000).ToDateTimeString() // 2020-08-05 13:14:15
carbon.CreateFromTimestamp(1596604455000000, carbon.Tokyo).ToDateTimeString() // 2020-08-05 14:14:15
// Create carbon instance from timestamp with nanosecond
carbon.CreateFromTimestamp(1596604455000000000).ToDateTimeString() // 2020-08-05 13:14:15
carbon.CreateFromTimestamp(1596604455000000000, carbon.Tokyo).ToDateTimeString() // 2020-08-05 14:14:15

// Create carbon instance from year, month, day, hour, minute and second
carbon.CreateFromDateTime(2020, 8, 5, 13, 14, 15).ToDateTimeString() // 2020-08-05 13:14:15
carbon.CreateFromDateTime(2020, 8, 5, 13, 14, 15, carbon.Tokyo).ToDateTimeString() // 2020-08-05 14:14:15
// Create carbon instance from year, month and day
carbon.CreateFromDate(2020, 8, 5).ToDateTimeString() // 2020-08-05 13:14:15
carbon.CreateFromDate(2020, 8, 5, carbon.Tokyo).ToDateTimeString() // 2020-08-05 14:14:15
// Create carbon instance from hour, minute and second
carbon.CreateFromTime(13, 14, 15).ToDateTimeString() // 2020-08-05 13:14:15
carbon.CreateFromTime(13, 14, 15, carbon.Tokyo).ToDateTimeString() // 2020-08-05 14:14:15

Parse as carbon by standard string

carbon.Parse("").ToDateTimeString() // empty string
carbon.Parse("0").ToDateTimeString() // empty string
carbon.Parse("0000-00-00 00:00:00").ToDateTimeString() // empty string
carbon.Parse("0000-00-00").ToDateTimeString() // empty string
carbon.Parse("2020-08-05 13:14:15").ToDateTimeString() // 2020-08-05 13:14:15
carbon.Parse("2020-08-05").ToDateTimeString() // 2020-08-05 00:00:00
carbon.Parse("20200805131415").ToDateTimeString() // 2020-08-05 13:14:15
carbon.Parse("20200805").ToDateTimeString() // 2020-08-05 00:00:00
carbon.Parse("2020-08-05T13:14:15+08:00").ToDateTimeString() // 2020-08-05 13:14:15
carbon.Parse("2020-08-05 13:14:15", carbon.Tokyo).ToDateTimeString() // 2020-08-05 14:14:15

Parse as carbon by format string

carbon.ParseByFormat("2020|08|05 13|14|15", "Y|m|d H|i|s").ToDateTimeString() // 2020-08-05 13:14:15
carbon.ParseByFormat("It is 2020-08-05 13:14:15", "\\I\\t \\i\\s Y-m-d H:i:s").ToDateTimeString() // 2020-08-05 13:14:15
carbon.ParseByFormat("今天是 2020年08月05日13时14分15秒", "今天是 Y年m月d日H时i分s秒").ToDateTimeString() // 2020-08-05 13:14:15
carbon.ParseByFormat("2020-08-05 13:14:15", "Y-m-d H:i:s", carbon.Tokyo).ToDateTimeString() // 2020-08-05 14:14:15

Parse as carbon by layout string

carbon.ParseByLayout("2020|08|05 13|14|15", "2006|01|02 15|04|05").ToDateTimeString() // 2020-08-05 13:14:15
carbon.ParseByLayout("It is 2020-08-05 13:14:15", "It is 2006-01-02 15:04:05").ToDateTimeString() // 2020-08-05 13:14:15
carbon.ParseByLayout("今天是 2020年08月05日13时14分15秒", "今天是 2006年01月02日15时04分05秒").ToDateTimeString() // 2020-08-05 13:14:15
carbon.ParseByLayout("2020-08-05 13:14:15", "2006-01-02 15:04:05", carbon.Tokyo).ToDateTimeString() // 2020-08-05 14:14:15

Convert between carbon and time.Time

// Time.time convert to Carbon
carbon.Time2Carbon(time.Now())
// Carbon convert to Time.time
carbon.Now().Carbon2Time()

Start and end

// Start of the century
carbon.Parse("2020-08-05 13:14:15").StartOfCentury().ToDateTimeString() // 2000-01-01 00:00:00
// End of the century
carbon.Parse("2020-08-05 13:14:15").EndOfCentury().ToDateTimeString() // 2999-12-31 23:59:59

// Start of the decade
carbon.Parse("2020-08-05 13:14:15").StartOfDecade().ToDateTimeString() // 2020-01-01 00:00:00
carbon.Parse("2021-08-05 13:14:15").StartOfDecade().ToDateTimeString() // 2020-01-01 00:00:00
carbon.Parse("2029-08-05 13:14:15").StartOfDecade().ToDateTimeString() // 2020-01-01 00:00:00
// End of the decade
carbon.Parse("2020-08-05 13:14:15").EndOfDecade().ToDateTimeString() // 2029-12-31 23:59:59
carbon.Parse("2021-08-05 13:14:15").EndOfDecade().ToDateTimeString() // 2029-12-31 23:59:59
carbon.Parse("2029-08-05 13:14:15").EndOfDecade().ToDateTimeString() // 2029-12-31 23:59:59

// Start of the year
carbon.Parse("2020-08-05 13:14:15").StartOfYear().ToDateTimeString() // 2020-01-01 00:00:00
// End of the year
carbon.Parse("2020-08-05 13:14:15").EndOfYear().ToDateTimeString() // 2020-12-31 23:59:59

// Start of the quarter
carbon.Parse("2020-08-05 13:14:15").StartOfQuarter().ToDateTimeString() // 2020-07-01 00:00:00
// End of the quarter
carbon.Parse("2020-08-05 13:14:15").EndOfQuarter().ToDateTimeString() // 2020-09-30 23:59:59

// Start of the month
carbon.Parse("2020-08-05 13:14:15").StartOfMonth().ToStartTimeString() // 2020-08-01 00:00:00
// End of the month
carbon.Parse("2020-08-05 13:14:15").EndOfMonth().ToDateTimeString() // 2020-08-31 23:59:59

// Start of the week
carbon.Parse("2020-08-05 13:14:15").StartOfWeek(time.Sunday).ToDateTimeString() // 2020-08-02 00:00:00
carbon.Parse("2020-08-05 13:14:15").StartOfWeek(time.Monday).ToDateTimeString() // 2020-08-03 00:00:00
// End of the week
carbon.Parse("2020-08-05 13:14:15").EndOfWeek(time.Sunday).ToDateTimeString() // 2020-08-08 23:59:59
carbon.Parse("2020-08-05 13:14:15").EndOfWeek(time.Monday).ToDateTimeString() // 2020-08-09 23:59:59

// Start of the day
carbon.Parse("2020-08-05 13:14:15").StartOfDay().ToDateTimeString() // 2020-08-05 00:00:00
// End of the day
carbon.Parse("2020-08-05 13:14:15").EndOfDay().ToDateTimeString() // 2020-08-05 23:59:59

// Start of the hour
carbon.Parse("2020-08-05 13:14:15").StartOfHour().ToDateTimeString() // 2020-08-05 13:00:00
// End of the hour
carbon.Parse("2020-08-05 13:14:15").EndOfHour().ToDateTimeString() // 2020-08-05 13:59:59

// Start of the minute
carbon.Parse("2020-08-05 13:14:15").StartOfMinute().ToDateTimeString() // 2020-08-05 13:14:00
// End of the minute
carbon.Parse("2020-08-05 13:14:15").EndOfMinute().ToDateTimeString() // 2020-08-05 13:14:59

// Start of the second
carbon.Parse("2020-08-05 13:14:15").StartOfSecond().Format("Y-m-d H:i:s.u") // 2020-08-05 13:14:15.0
// End of the second
carbon.Parse("2020-08-05 13:14:15").EndOfSecond().Format("Y-m-d H:i:s.u") // 2020-08-05 13:14:15.999

Addition and subtraction

// Add three centuries
carbon.Parse("2020-02-29 13:14:15").AddCenturies(3).ToDateTimeString() // 2320-02-29 13:14:15
// Add three centuries with no overflow
carbon.Parse("2020-02-29 13:14:15").AddCenturiesNoOverflow(3).ToDateTimeString() // 2320-02-29 13:14:15

// Add one century
carbon.Parse("2020-02-29 13:14:15").AddCentury().ToDateTimeString() // 2120-02-29 13:14:15
// Add one century with no overflow
carbon.Parse("2020-02-29 13:14:15").AddCenturyNoOverflow().ToDateTimeString() // 2120-02-29 13:14:15

// Subtract three centuries
carbon.Parse("2020-02-29 13:14:15").SubCenturies(3).ToDateTimeString() // 1720-02-29 13:14:15
// Subtract three centuries with no overflow
carbon.Parse("2020-02-29 13:14:15").SubCenturiesNoOverflow(3).ToDateTimeString() // 1720-02-29 13:14:15

// Subtract one century
carbon.Parse("2020-02-29 13:14:15").SubCentury().ToDateTimeString() // 1920-02-29 13:14:15
// Subtract one century with no overflow
carbon.Parse("2020-02-29 13:14:15").SubCenturyNoOverflow().ToDateTimeString() // 1920-02-20 13:14:15

// Add three years
carbon.Parse("2020-02-29 13:14:15").AddYears(3).ToDateTimeString() // 2023-03-01 13:14:15
// Add three years with no overflow
carbon.Parse("2020-02-29 13:14:15").AddYearsNoOverflow(3).ToDateTimeString() // 2023-02-28 13:14:15

// Add one year
carbon.Parse("2020-02-29 13:14:15").AddYear().ToDateTimeString() // 2021-03-01 13:14:15
// Add one year with no overflow
carbon.Parse("2020-02-29 13:14:15").AddYearNoOverflow().ToDateTimeString() // 2021-02-28 13:14:15

// Subtract three years
carbon.Parse("2020-02-29 13:14:15").SubYears(3).ToDateTimeString() // 2017-03-01 13:14:15
// Subtract three years with no overflow
carbon.Parse("2020-02-29 13:14:15").SubYearsNoOverflow(3).ToDateTimeString() // 2017-02-28 13:14:15

// Subtract one year
carbon.Parse("2020-02-29 13:14:15").SubYear().ToDateTimeString() // 2019-03-01 13:14:15
// Subtract one year with no overflow
carbon.Parse("2020-02-29 13:14:15").SubYearNoOverflow().ToDateTimeString() // 2019-02-28 13:14:15

// Add three quarters
carbon.Parse("2019-08-31 13:14:15").AddQuarters(3).ToDateTimeString() // 2019-03-02 13:14:15
// Add three quarters with no overflow
carbon.Parse("2019-08-31 13:14:15").AddQuartersNoOverflow(3).ToDateTimeString() // 2019-02-29 13:14:15

// Add one quarter
carbon.Parse("2019-11-30 13:14:15").AddQuarter().ToDateTimeString() // 2020-03-01 13:14:15
// Add one quarter with no overflow
carbon.Parse("2019-11-30 13:14:15").AddQuarterNoOverflow().ToDateTimeString() // 2020-02-29 13:14:15

// Subtract three quarters
carbon.Parse("2019-08-31 13:14:15").SubQuarters(3).ToDateTimeString() // 2019-03-03 13:14:15
// Subtract three quarters with no overflow
carbon.Parse("2019-08-31 13:14:15").SubQuartersNoOverflow(3).ToDateTimeString() // 2019-02-28 13:14:15

// Subtract one quarter
carbon.Parse("2020-05-31 13:14:15").SubQuarter().ToDateTimeString() // 2020-03-02 13:14:15
// Subtract one quarter with no overflow
carbon.Parse("2020-05-31 13:14:15").SubQuarterNoOverflow().ToDateTimeString() // 2020-02-29 13:14:15

// Add three months
carbon.Parse("2020-02-29 13:14:15").AddMonths(3).ToDateTimeString() // 2020-05-29 13:14:15
// Add three months with no overflow
carbon.Parse("2020-02-29 13:14:15").AddMonthsNoOverflow(3).ToDateTimeString() // 2020-05-29 13:14:15

// Add one month
carbon.Parse("2020-01-31 13:14:15").AddMonth().ToDateTimeString() // 2020-03-02 13:14:15
// Add one month with no overflow
carbon.Parse("2020-01-31 13:14:15").AddMonthNoOverflow().ToDateTimeString() // 2020-02-29 13:14:15

// Subtract three months
carbon.Parse("2020-02-29 13:14:15").SubMonths(3).ToDateTimeString() // 2019-11-29 13:14:15
// Subtract three months with no overflow
carbon.Parse("2020-02-29 13:14:15").SubMonthsNoOverflow(3).ToDateTimeString() // 2019-11-29 13:14:15

// Subtract one month
carbon.Parse("2020-03-31 13:14:15").SubMonth().ToDateTimeString() // 2020-03-02 13:14:15
// Subtract one month with no overflow
carbon.Parse("2020-03-31 13:14:15").SubMonthNoOverflow().ToDateTimeString() // 2020-02-29 13:14:15

// Add three weeks
carbon.Parse("2020-02-29 13:14:15").AddWeeks(3).ToDateTimeString() // 2020-03-21 13:14:15
// Add one week
carbon.Parse("2020-02-29 13:14:15").AddWeek().ToDateTimeString() // 2020-03-07 13:14:15

// Subtract three weeks
carbon.Parse("2020-02-29 13:14:15").SubWeeks(3).ToDateTimeString() // 2020-02-08 13:14:15
// Subtract three week
carbon.Parse("2020-02-29 13:14:15").SubWeek().ToDateTimeString() // 2020-02-22 13:14:15

// Add three days
carbon.Parse("2020-08-05 13:14:15").AddDays(3).ToDateTimeString() // 2020-08-08 13:14:15
// Add one day
carbon.Parse("2020-08-05 13:14:15").AddDay().ToDateTimeString() // 2020-08-05 13:14:15

// Subtract three days
carbon.Parse("2020-08-05 13:14:15").SubDays(3).ToDateTimeString() // 2020-08-02 13:14:15
// Subtract one day
carbon.Parse("2020-08-05 13:14:15").SubDay().ToDateTimeString() // 2020-08-04 13:14:15

// Add three hours
carbon.Parse("2020-08-05 13:14:15").AddHours(3).ToDateTimeString() // 2020-08-05 16:14:15
// Add two and a half hours
carbon.Parse("2020-08-05 13:14:15").AddDuration("2.5h").ToDateTimeString() // 2020-08-05 15:44:15
carbon.Parse("2020-08-05 13:14:15").AddDuration("2h30m").ToDateTimeString() // 2020-08-05 15:44:15
// Add one hour
carbon.Parse("2020-08-05 13:14:15").AddHour().ToDateTimeString() // 2020-08-05 14:14:15

// Subtract three hours
carbon.Parse("2020-08-05 13:14:15").SubHours(3).ToDateTimeString() // 2020-08-05 10:14:15
// Subtract two and a half hours
carbon.Parse("2020-08-05 13:14:15").SubDuration("2.5h").ToDateTimeString() // 2020-08-05 10:44:15
carbon.Parse("2020-08-05 13:14:15").SubDuration("2h30m").ToDateTimeString() // 2020-08-05 10:44:15
// Subtract one hour
carbon.Parse("2020-08-05 13:14:15").SubHour().ToDateTimeString() // 2020-08-05 12:14:15

// Add three minutes
carbon.Parse("2020-08-05 13:14:15").AddMinutes(3).ToDateTimeString() // 2020-08-05 13:17:15
// Add two and a half minutes
carbon.Parse("2020-08-05 13:14:15").AddDuration("2.5m").ToDateTimeString() // 2020-08-05 13:16:45
carbon.Parse("2020-08-05 13:14:15").AddDuration("2m30s").ToDateTimeString() // 2020-08-05 13:16:45
// Add one minute
carbon.Parse("2020-08-05 13:14:15").AddMinute().ToDateTimeString() // 2020-08-05 13:15:15

// Subtract three minutes
carbon.Parse("2020-08-05 13:14:15").SubMinutes(3).ToDateTimeString() // 2020-08-05 13:11:15
// Subtract two and a half minutes
carbon.Parse("2020-08-05 13:14:15").SubDuration("2.5m").ToDateTimeString() // 2020-08-05 13:11:45
// Subtract one minute
carbon.Parse("2020-08-05 13:14:15").SubMinute().ToDateTimeString() // 2020-08-05 13:13:15

// Add three seconds
carbon.Parse("2020-08-05 13:14:15").AddSeconds(3).ToDateTimeString() // 2020-08-05 13:14:18
// Add two and a half seconds
carbon.Parse("2020-08-05 13:14:15").AddDuration("2.5s").ToDateTimeString() // 2020-08-05 13:14:17
// Add one second
carbon.Parse("2020-08-05 13:14:15").AddSecond().ToDateTimeString() // 2020-08-05 13:14:16

// Subtract three seconds
carbon.Parse("2020-08-05 13:14:15").SubSeconds(3).ToDateTimeString() // 2020-08-05 13:14:12
// Subtract two and a half seconds
carbon.Parse("2020-08-05 13:14:15").SubDuration("2.5s").ToDateTimeString() // 2020-08-05 13:14:12
// Subtract one second
carbon.Parse("2020-08-05 13:14:15").SubSecond().ToDateTimeString() // 2020-08-05 13:14:14

Difference

// Difference in weeks
carbon.Parse("2020-08-05 13:14:15").DiffInWeeks(carbon.Parse("2020-07-28 13:14:15")) // -1
// Difference in weeks with absolute value
carbon.Parse("2020-08-05 13:14:15").DiffInWeeksWithAbs(carbon.Parse("2020-07-28 13:14:15")) // 1

// Difference in days
carbon.Parse("2020-08-05 13:14:15").DiffInDays(carbon.Parse("2020-08-04 13:14:15")) // -1
// Difference in days with absolute value
carbon.Parse("2020-08-05 13:14:15").DiffInDaysWithAbs(carbon.Parse("2020-08-04 13:14:15")) // 1

// Difference in hours
carbon.Parse("2020-08-05 13:14:15").DiffInHours(carbon.Parse("2020-08-05 12:14:15")) // -1
// Difference in hours with absolute value
carbon.Parse("2020-08-05 13:14:15").DiffInHoursWithAbs(carbon.Parse("2020-08-05 12:14:15")) // 1

// Difference in minutes
carbon.Parse("2020-08-05 13:14:15").DiffInMinutes(carbon.Parse("2020-08-05 13:13:15")) // -1
// Difference in minutes with absolute value
carbon.Parse("2020-08-05 13:14:15").DiffInMinutesWithAbs(carbon.Parse("2020-08-05 13:13:15")) // 1

// Difference in seconds
carbon.Parse("2020-08-05 13:14:15").DiffInSeconds(carbon.Parse("2020-08-05 13:14:14")) // -1
// Difference in seconds with absolute value
carbon.Parse("2020-08-05 13:14:15").DiffInSecondsWithAbs(carbon.Parse("2020-08-05 13:14:14")) // 1

// Difference for humans from now time
carbon.Parse("2020-08-05 13:14:15").DiffForHumans()) // just now
carbon.Parse("2019-08-05 13:14:15").DiffForHumans() // 1 year ago
carbon.Parse("2018-08-05 13:14:15").DiffForHumans() // 2 years ago
carbon.Parse("2021-08-05 13:14:15").DiffForHumans() // 1 year from now
carbon.Parse("2022-08-05 13:14:15").DiffForHumans() // 2 years from now
// Difference for humans from another time
carbon.Parse("2020-08-05 13:14:15").DiffForHumans(carbon.Now()) // 1 year before
carbon.Parse("2019-08-05 13:14:15").DiffForHumans(carbon.Now()) // 2 years before
carbon.Parse("2018-08-05 13:14:15").DiffForHumans(carbon.Now()) // 1 year after
carbon.Parse("2022-08-05 13:14:15").DiffForHumans(carbon.Now()) // 2 years after

Comparison

// Whether is zero time
carbon.Parse("").IsZero() // true
carbon.Parse("0").IsZero() // true
carbon.Parse("0000-00-00 00:00:00").IsZero() // true
carbon.Parse("0000-00-00").IsZero() // true
carbon.Parse("00:00:00").IsZero() // true
carbon.Parse("2020-08-05 00:00:00").IsZero() // false
carbon.Parse("2020-08-05").IsZero() // false
carbon.Parse("2020-08-05").SetTimezone("xxx").IsZero() // false

// Whether is invalid time
carbon.Parse("").IsInvalid() // true
carbon.Parse("0").IsInvalid() // true
carbon.Parse("0000-00-00 00:00:00").IsInvalid() // true
carbon.Parse("0000-00-00").IsInvalid() // true
carbon.Parse("00:00:00").IsInvalid() // true
carbon.Parse("2020-08-05 00:00:00").IsInvalid() // false
carbon.Parse("2020-08-05").IsInvalid() // false
carbon.Parse("2020-08-05").SetTimezone("xxx").IsInvalid() // true

// Whether is now time
carbon.Now().IsNow() // true
// Whether is future time
carbon.Tomorrow().IsFuture() // true
// Whether is pass time
carbon.Yesterday().IsPast() // true

// Whether is leap year
carbon.Parse("2020-08-05 13:14:15").IsLeapYear() // true
// Whether is long year
carbon.Parse("2020-08-05 13:14:15").IsLongYear() // true

// Whether is january 
carbon.Parse("2020-08-05 13:14:15").IsJanuary() // false
// Whether is february
carbon.Parse("2020-08-05 13:14:15").IsFebruary() // false
// Whether is march
carbon.Parse("2020-08-05 13:14:15").IsMarch() // false
// Whether is april
carbon.Parse("2020-08-05 13:14:15").IsApril()  // false
// Whether is may
carbon.Parse("2020-08-05 13:14:15").IsMay() // false
// Whether is june
carbon.Parse("2020-08-05 13:14:15").IsJune() // false
// Whether is july
carbon.Parse("2020-08-05 13:14:15").IsJuly() // false
// Whether is august
carbon.Parse("2020-08-05 13:14:15").IsAugust() // false
// Whether is september
carbon.Parse("2020-08-05 13:14:15").IsSeptember() // true
// Whether is october
carbon.Parse("2020-08-05 13:14:15").IsOctober() // false
// Whether is november
carbon.Parse("2020-08-05 13:14:15").IsNovember() // false
// Whether is december
carbon.Parse("2020-08-05 13:14:15").IsDecember() // false

// Whether is monday
carbon.Parse("2020-08-05 13:14:15").IsMonday() // false
// Whether is tuesday
carbon.Parse("2020-08-05 13:14:15").IsTuesday() // true
// Whether is wednesday
carbon.Parse("2020-08-05 13:14:15").IsWednesday() // false
// Whether is thursday
carbon.Parse("2020-08-05 13:14:15").IsThursday()  // false
// Whether is friday
carbon.Parse("2020-08-05 13:14:15").IsFriday() // false
// Whether is saturday
carbon.Parse("2020-08-05 13:14:15").IsSaturday() // false
// Whether is sunday
carbon.Parse("2020-08-05 13:14:15").IsSunday() // false
// Whether is weekday
carbon.Parse("2020-08-05 13:14:15").IsWeekday() // false
// Whether is weekend
carbon.Parse("2020-08-05 13:14:15").IsWeekend() // true

// Whether is yesterday
carbon.Parse("2020-08-04 13:14:15").IsYesterday() // true
carbon.Parse("2020-08-04 00:00:00").IsYesterday() // true
carbon.Parse("2020-08-04").IsYesterday() // true
// Whether is today
carbon.Parse("2020-08-05 13:14:15").IsToday() // true
carbon.Parse("2020-08-05 00:00:00").IsToday() // true
carbon.Parse("2020-08-05").IsToday() // true
// Whether is tomorrow
carbon.Parse("2020-08-06 13:14:15").IsTomorrow() // true
carbon.Parse("2020-08-06 00:00:00").IsTomorrow() // true
carbon.Parse("2020-08-06").IsTomorrow() // true

// Whether greater than
carbon.Parse("2020-08-05 13:14:15").Gt(carbon.Parse("2020-08-04 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Gt(carbon.Parse("2020-08-05 13:14:15")) // false
carbon.Parse("2020-08-05 13:14:15").Compare(">", carbon.Parse("2020-08-04 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Compare(">", carbon.Parse("2020-08-05 13:14:15")) // false

// Whether less than
carbon.Parse("2020-08-05 13:14:15").Lt(carbon.Parse("2020-08-06 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Lt(carbon.Parse("2020-08-05 13:14:15")) // false
carbon.Parse("2020-08-05 13:14:15").Compare("<", carbon.Parse("2020-08-06 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Compare("<", carbon.Parse("2020-08-05 13:14:15")) // false

// Whether equal
carbon.Parse("2020-08-05 13:14:15").Eq(carbon.Parse("2020-08-05 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Eq(carbon.Parse("2020-08-05 13:14:00")) // false
carbon.Parse("2020-08-05 13:14:15").Compare("=", carbon.Parse("2020-08-05 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Compare("=", carbon.Parse("2020-08-05 13:14:00")) // false

// Whether not equal
carbon.Parse("2020-08-05 13:14:15").Ne(carbon.Parse("2020-08-06 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Ne(carbon.Parse("2020-08-05 13:14:15")) // false
carbon.Parse("2020-08-05 13:14:15").Compare("!=", carbon.Parse("2020-08-06 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Compare("<>", carbon.Parse("2020-08-05 13:14:15")) // false

// Whether greater than or equal
carbon.Parse("2020-08-05 13:14:15").Gte(carbon.Parse("2020-08-04 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Gte(carbon.Parse("2020-08-05 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Compare(">=", carbon.Parse("2020-08-04 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Compare(">=", carbon.Parse("2020-08-05 13:14:15")) // true

// Whether less than or equal
carbon.Parse("2020-08-05 13:14:15").Lte(carbon.Parse("2020-08-06 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Lte(carbon.Parse("2020-08-05 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Compare("<=", carbon.Parse("2020-08-06 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").Compare("<=", carbon.Parse("2020-08-05 13:14:15")) // true

// Whether between
carbon.Parse("2020-08-05 13:14:15").Between(carbon.Parse("2020-08-05 13:14:15"), carbon.Parse("2020-08-06 13:14:15")) // false
carbon.Parse("2020-08-05 13:14:15").Between(carbon.Parse("2020-08-04 13:14:15"), carbon.Parse("2020-08-06 13:14:15")) // true

// Whether between included start
carbon.Parse("2020-08-05 13:14:15").BetweenIncludedStart(carbon.Parse("2020-08-05 13:14:15"), carbon.Parse("2020-08-06 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").BetweenIncludedStart(carbon.Parse("2020-08-04 13:14:15"), carbon.Parse("2020-08-06 13:14:15")) // true

// Whether between included end 
carbon.Parse("2020-08-05 13:14:15").BetweenIncludedEnd(carbon.Parse("2020-08-04 13:14:15"), carbon.Parse("2020-08-05 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").BetweenIncludedEnd(carbon.Parse("2020-08-04 13:14:15"), carbon.Parse("2020-08-06 13:14:15")) // true

// Whether between included both
carbon.Parse("2020-08-05 13:14:15").BetweenIncludedBoth(carbon.Parse("2020-08-05 13:14:15"), carbon.Parse("2020-08-06 13:14:15")) // true
carbon.Parse("2020-08-05 13:14:15").BetweenIncludedBoth(carbon.Parse("2020-08-04 13:14:15"), carbon.Parse("2020-08-05 13:14:15")) // true

For the definition of long year, please refer to https://en.wikipedia.org/wiki/ISO_8601#Week_dates

Output

// Output timestamp with second, ToTimestamp() is short for ToTimestampWithSecond()
carbon.Parse("2020-08-05 13:14:15").ToTimestamp() // 1596604455
carbon.Parse("2020-08-05 13:14:15").ToTimestampWithSecond() // 1596604455
// Output timestamp with millisecond
carbon.Parse("2020-08-05 13:14:15").ToTimestampWithMillisecond() // 1596604455000
// Output timestamp with microsecond
carbon.Parse("2020-08-05 13:14:15").ToTimestampWithMicrosecond() // 1596604455000000
// Output timestamp with nanosecond
carbon.Parse("2020-08-05 13:14:15").ToTimestampWithNanosecond() // 1596604455000000000

// Output datetime format string
carbon.Parse("2020-08-05 13:14:15").ToDateTimeString() // 2020-08-05 13:14:15
carbon.Parse("2020-08-05 13:14:15").ToDateTimeString(carbon.Tokyo) // 2020-08-05 14:14:15
// Output short datetime format string
carbon.Parse("2020-08-05 13:14:15").ToShortDateTimeString() // 20200805131415
carbon.Parse("2020-08-05 13:14:15").ToShortDateTimeString(carbon.Tokyo) // 20200805141415

// Output date format string
carbon.Parse("2020-08-05 13:14:15").ToDateString() // 2020-08-05
carbon.Parse("2020-08-05 13:14:15").ToDateString(carbon.Tokyo) // 2020-08-05
// Output short date format string
carbon.Parse("2020-08-05 13:14:15").ToShortDateString() // 20200805
carbon.Parse("2020-08-05 13:14:15").ToShortDateString(carbon.Tokyo) // 20200805

// Output time format string
carbon.Parse("2020-08-05 13:14:15").ToTimeString() // 13:14:15
carbon.Parse("2020-08-05 13:14:15").ToTimeString(carbon.Tokyo) // 14:14:15
// Output short time format string
carbon.Parse("2020-08-05 13:14:15").ToShortTimeString() // 131415
carbon.Parse("2020-08-05 13:14:15").ToShortTimeString(carbon.Tokyo) // 141415

// Output Ansic format string
carbon.Parse("2020-08-05 13:14:15").ToAnsicString() // Wed Aug  5 13:14:15 2020
carbon.Parse("2020-08-05 13:14:15").ToAnsicString(carbon.Tokyo) // Wed Aug  5 14:14:15 2020
// Output Atom format string
carbon.Parse("2020-08-05 13:14:15").ToAtomString() // 2020-08-05T13:14:15+08:00
carbon.Parse("2020-08-05 13:14:15").ToAtomString(carbon.Tokyo) // 2020-08-05T14:14:15+08:00
// Output UnixDate format string
carbon.Parse("2020-08-05 13:14:15").ToUnixDateString() // Wed Aug  5 13:14:15 CST 2020
carbon.Parse("2020-08-05 13:14:15").ToUnixDateString(carbon.Tokyo) // Wed Aug  5 14:14:15 JST 2020
// Output RubyDate format string
carbon.Parse("2020-08-05 13:14:15").ToRubyDateString() // Wed Aug 05 13:14:15 +0800 2020
carbon.Parse("2020-08-05 13:14:15").ToRubyDateString(carbon.Tokyo) // Wed Aug 05 14:14:15 +0900 2020
// Output Kitchen format string
carbon.Parse("2020-08-05 13:14:15").ToKitchenString() // 1:14PM
carbon.Parse("2020-08-05 13:14:15").ToKitchenString(carbon.Tokyo) // 2:14PM
// Output Cookie format string
carbon.Parse("2020-08-05 13:14:15").ToCookieString() // Wednesday, 05-Aug-2020 13:14:15 CST
carbon.Parse("2020-08-05 13:14:15").ToCookieString(carbon.Tokyo) // Wednesday, 05-Aug-2020 14:14:15 JST
// Output output day, date and time format string
carbon.Parse("2020-08-05 13:14:15").ToDayDateTimeString() // Wed, Aug 5, 2020 1:14 PM
carbon.Parse("2020-08-05 13:14:15").ToDayDateTimeString(carbon.Tokyo) // Wed, Aug 5, 2020 2:14 PM
// Output RSS format string
carbon.Parse("2020-08-05 13:14:15").ToRssString() // Wed, 05 Aug 2020 13:14:15 +0800
carbon.Parse("2020-08-05 13:14:15").ToRssString(carbon.Tokyo) // Wed, 05 Aug 2020 14:14:15 +0900
// Output W3C format string
carbon.Parse("2020-08-05 13:14:15").ToW3cString() // 2020-08-05T13:14:15+08:00
carbon.Parse("2020-08-05 13:14:15").ToW3cString(carbon.Tokyo) // 2020-08-05T14:14:15+09:00

// Output ISO8601 format string
carbon.Parse("2020-08-05 13:14:15").ToIso8601String() // 2020-08-05T13:14:15+08:00
carbon.Parse("2020-08-05 13:14:15").ToIso8601String(carbon.Tokyo) // 2020-08-05T14:14:15+09:00
// Output RFC822 format string
carbon.Parse("2020-08-05 13:14:15").ToRfc822String() // 05 Aug 20 13:14 CST
carbon.Parse("2020-08-05 13:14:15").ToRfc822String(carbon.Tokyo) // 05 Aug 20 14:14 JST
// Output RFC822Z format string
carbon.Parse("2020-08-05 13:14:15").ToRfc822zString() // 05 Aug 20 13:14 +0800
carbon.Parse("2020-08-05 13:14:15").ToRfc822zString(carbon.Tokyo) // 05 Aug 20 14:14 +0900
// Output RFC850 format string
carbon.Parse("2020-08-05 13:14:15").ToRfc850String() // Wednesday, 05-Aug-20 13:14:15 CST
carbon.Parse("2020-08-05 13:14:15").ToRfc850String(carbon.Tokyo) // Wednesday, 05-Aug-20 14:14:15 JST
// Output RFC1036 format string
carbon.Parse("2020-08-05 13:14:15").ToRfc1036String() // Wed, 05 Aug 20 13:14:15 +0800
carbon.Parse("2020-08-05 13:14:15").ToRfc1036String(carbon.Tokyo) // Wed, 05 Aug 20 14:14:15 +0900
// Output RFC1123 format string
carbon.Parse("2020-08-05 13:14:15").ToRfc1123String() // Wed, 05 Aug 2020 13:14:15 CST
carbon.Parse("2020-08-05 13:14:15").ToRfc1123String(carbon.Tokyo) // Wed, 05 Aug 2020 14:14:15 JST
// Output RFC1123Z format string
carbon.Parse("2020-08-05 13:14:15").ToRfc1123zString() // Wed, 05 Aug 2020 13:14:15 +0800
carbon.Parse("2020-08-05 13:14:15").ToRfc1123zString(carbon.Tokyo) // Wed, 05 Aug 2020 14:14:15 0800
// Output RFC2822 format string
carbon.Parse("2020-08-05 13:14:15").ToRfc2822String() // Wed, 05 Aug 2020 13:14:15 +0800
carbon.Parse("2020-08-05 13:14:15").ToRfc2822String(carbon.Tokyo) // Wed, 05 Aug 2020 14:14:15 +0900
// Output RFC3339 format string
carbon.Parse("2020-08-05 13:14:15").ToRfc3339String() // 2020-08-05T13:14:15+08:00
carbon.Parse("2020-08-05 13:14:15").ToRfc3339String(carbon.Tokyo) // 2020-08-05T14:14:15+09:00
// Output RFC7231 format string
carbon.Parse("2020-08-05 13:14:15").ToRfc7231String() // Wed, 05 Aug 2020 13:14:15 GMT
carbon.Parse("2020-08-05 13:14:15").ToRfc7231String(carbon.Tokyo) // Wed, 05 Aug 2020 14:14:15 GMT

// Output date and time format string
fmt.Sprintf("%s", carbon.Parse("2020-08-05 13:14:15")) // 2020-08-05 13:14:15
fmt.Sprintf("%s", carbon.Parse("2020-08-05 13:14:15", carbon.Tokyo)) // 2020-08-05 13:14:15

// Output "2006-01-02 15:04:05.999999999 -0700 MST" format string
carbon.Parse("2020-08-05 13:14:15").ToString() // 2020-08-05 13:14:15 +0800 CST
carbon.Parse("2020-08-05 13:14:15").ToString(carbon.Tokyo) // 2020-08-05 14:14:15 +0900 JST

// Output string by layout, Layout() is short for ToLayoutString()
carbon.Parse("2020-08-05 13:14:15").Layout("20060102150405") // 20200805131415
carbon.Parse("2020-08-05 13:14:15").Layout("2006年01月02日 15时04分05秒") // 2020年08月05日 13时14分15秒
carbon.Parse("2020-08-05 13:14:15").Layout("It is 2006-01-02 15:04:05") // It is 2020-08-05 13:14:15
carbon.Parse("2020-08-05 13:14:15").Layout("2006-01-02 15:04:05", carbon.Tokyo) // 2020-08-05 14:14:15

// Output string by format, Format() is short for ToFormatString()
carbon.Parse("2020-08-05 13:14:15").Format("YmdHis") // 20200805131415
carbon.Parse("2020-08-05 13:14:15").Format("Y年m月d日 H时i分s秒") // 2020年08月05日 13时14分15秒
carbon.Parse("2020-08-05 13:14:15").Format("l jS \\o\\f F Y h:i:s A") // Wednesday 5th of August 2020 01:14:15 PM
carbon.Parse("2020-08-05 13:14:15").Format("\\I\\t \\i\\s Y-m-d H:i:s") // It is 2020-08-05 13:14:15
carbon.Parse("2020-08-05 13:14:15").Format("Y-m-d H:i:s", carbon.Tokyo) // 2020-08-05 14:14:15

For more supported format signs, please see the Format sign table

Getter

// Get total days of the year
carbon.Parse("2019-08-05 13:14:15").DaysInYear() // 365
carbon.Parse("2020-08-05 13:14:15").DaysInYear() // 366
// Get total days of the month
carbon.Parse("2020-02-01 13:14:15").DaysInMonth() // 29
carbon.Parse("2020-04-01 13:14:15").DaysInMonth() // 30
carbon.Parse("2020-08-01 13:14:15").DaysInMonth() // 31

// Get day of the year (start with 1)
carbon.Parse("2020-08-05 13:14:15").DayOfYear() // 218
// Get week of the year (start with 1)
carbon.Parse("2020-08-05 13:14:15").WeekOfYear() // 32
// Get day of the month (start with 1)
carbon.Parse("2020-08-05 13:14:15").DayOfMonth() // 5
// Get week of the month (start with 1)
carbon.Parse("2020-08-05 13:14:15").WeekOfMonth() // 1
// Get day of the week (start with 1)
carbon.Parse("2020-08-05 13:14:15").DayOfWeek() // 3

// Get current century
carbon.Parse("2020-08-05 13:14:15").Century() // 21
// Get current decade
carbon.Parse("2019-08-05 13:14:15").Decade() // 10
carbon.Parse("2021-08-05 13:14:15").Decade() // 20
// Get current year
carbon.Parse("2020-08-05 13:14:15").Year() // 2020
// Get current quarter
carbon.Parse("2020-08-05 13:14:15").Quarter() // 3
// Get current month
carbon.Parse("2020-08-05 13:14:15").Month() // 8
// Get current week(start with 0)
carbon.Parse("2020-08-05 13:14:15").Week() // 3
carbon.Parse("2020-08-05 13:14:15").Week() // 3
// Get current day
carbon.Parse("2020-08-05 13:14:15").Day() // 5
// Get current hour
carbon.Parse("2020-08-05 13:14:15").Hour() // 13
// Get current minute
carbon.Parse("2020-08-05 13:14:15").Minute() // 14
// Get current second
carbon.Parse("2020-08-05 13:14:15").Second() // 15
// Get current millisecond
carbon.Parse("2020-08-05 13:14:15").Millisecond() // 1596604455000
// Get current microsecond
carbon.Parse("2020-08-05 13:14:15").Microsecond() // 1596604455000000
// Get current nanosecond
carbon.Parse("2020-08-05 13:14:15").Nanosecond() // 1596604455000000000

// Get timezone name
carbon.SetTimezone(carbon.PRC).Timezone() // CST
carbon.SetTimezone(carbon.Tokyo).Timezone() // JST

// Get location name
carbon.SetTimezone(carbon.PRC).Location() // PRC
carbon.SetTimezone(carbon.Tokyo).Location() // Asia/Tokyo

// Get offset seconds from the UTC timezone
carbon.SetTimezone(carbon.PRC).Offset() // 28800
carbon.SetTimezone(carbon.Tokyo).Offset() // 32400

// Get locale name
carbon.Now().SetLocale("en").Locale() // en
carbon.Now().SetLocale("zh-CN").Locale() // zh-CN

// Get constellation name
carbon.Now().Constellation() // Leo
carbon.Now().SetLocale("en").Constellation() // Leo
carbon.Now().SetLocale("zh-CN").Constellation() // 狮子座

//Get season name
carbon.Now().Season() // Summer
carbon.Now().SetLocale("en").Season() // Summer
carbon.Now().SetLocale("zh-CN").Season() // 夏季

// Get current age
carbon.Parse("2002-01-01 13:14:15").Age() // 17
carbon.Parse("2002-12-31 13:14:15").Age() // 18

If you have any doubt about 'WeekOfYear()' and 'WeekOfMonth()', please refer to ISO8601 standard

Setter

// Set timezone
carbon.SetTimezone(carbon.PRC).Now().ToDateTimeString() // 2020-08-05 13:14:15
carbon.SetTimezone(carbon.Tokyo).Now().ToDateTimeString() // 2020-08-05 14:14:15
carbon.SetTimezone(carbon.Tokyo).Now().SetTimezone(carbon.PRC).ToDateTimeString() // 2020-08-05 12:14:15

// Set locale
carbon.Parse("2020-07-05 13:14:15").SetLocale("en").DiffForHumans()) // 1 month before
carbon.Parse("2020-07-05 13:14:15").SetLocale("zh-CN").DiffForHumans()) // 1 月前

// Set year
carbon.Parse("2019-08-05").SetYear(2020).ToDateString() // 2020-08-05
carbon.Parse("2020-02-29").SetYear(2019).ToDateString() // 2019-03-01

// Set month
carbon.Parse("2020-01-31").SetMonth(2).ToDateString() // 2020-03-02
carbon.Parse("2020-08-05").SetMonth(2).ToDateString() // 2020-02-05

// Set day
carbon.Parse("2019-08-05").SetDay(31).ToDateString() // 2020-08-31
carbon.Parse("2020-02-01").SetDay(31).ToDateString() // 2020-03-02

// Set hour
carbon.Parse("2020-08-05 13:14:15").SetHour(10).ToDateTimeString() // 2020-08-05 10:14:15
carbon.Parse("2020-08-05 13:14:15").SetHour(24).ToDateTimeString() // 2020-08-06 00:14:15

// Set minute
carbon.Parse("2020-08-05 13:14:15").SetMinute(10).ToDateTimeString() // 2020-08-05 13:10:15
carbon.Parse("2020-08-05 13:14:15").SetMinute(60).ToDateTimeString() // 2020-08-05 14:00:15

// Set second
carbon.Parse("2020-08-05 13:14:15").SetSecond(10).ToDateTimeString() // 2020-08-05 13:14:10
carbon.Parse("2020-08-05 13:14:15").SetSecond(60).ToDateTimeString() // 2020-08-05 13:15:00

Constellation

// Get constellation name
carbon.Parse("2020-08-05 13:14:15").Constellation() // Leo

// Whether is aries
carbon.Parse("2020-08-05 13:14:15").IsAries() // false
// Whether is taurus
carbon.Parse("2020-08-05 13:14:15").IsTaurus() // false
// Whether is gemini
carbon.Parse("2020-08-05 13:14:15").IsGemini() // false
// Whether is cancer
carbon.Parse("2020-08-05 13:14:15").IsCancer() // false
// Whether is leo
carbon.Parse("2020-08-05 13:14:15").IsLeo() // true
// Whether is virgo
carbon.Parse("2020-08-05 13:14:15").IsVirgo() // false
// Whether is libra
carbon.Parse("2020-08-05 13:14:15").IsLibra() // false
// Whether is scorpio
carbon.Parse("2020-08-05 13:14:15").IsScorpio() // false
// Whether is sagittarius
carbon.Parse("2020-08-05 13:14:15").IsSagittarius() // false
// Whether is capricorn
carbon.Parse("2020-08-05 13:14:15").IsCapricorn() // false
// Whether is aquarius
carbon.Parse("2020-08-05 13:14:15").IsAquarius() // false
// Whether is pisces
carbon.Parse("2020-08-05 13:14:15").IsPisces() // false

Season

According to the meteorological division, March to May is spring, June to August is summer, September to November is autumn, and December to February is winter

// Get season name
carbon.Parse("2020-08-05 13:14:15").Season() // Summer

// Start of the season
carbon.Parse("2020-08-05 13:14:15").StartOfSeason().ToDateTimeString() // 2020-06-01 00:00:00
// End of the season
carbon.Parse("2020-08-05 13:14:15").EndOfSeason().ToDateTimeString() // 2020-08-31 23:59:59

// Whether is spring
carbon.Parse("2020-08-05 13:14:15").IsSpring() // false
// Whether is summer
carbon.Parse("2020-08-05 13:14:15").IsSummer() // true
// Whether is autumn
carbon.Parse("2020-08-05 13:14:15").IsAutumn() // false
// Whether is winter
carbon.Parse("2020-08-05 13:14:15").IsWinter() // false

Lunar

Currently only 200 years from 1900 to 2100 are supported

// Get year of animal
carbon.Parse("2020-08-05 13:14:15").Lunar().Animal() // 鼠

// Get festival of lunar
carbon.Parse("2021-02-12 13:14:15").Lunar().Festival() // 春节

// Get year of lunar
carbon.Parse("2020-08-05 13:14:15").Lunar().Year() // 2020
// Get month of lunar
carbon.Parse("2020-08-05 13:14:15").Lunar().Month() // 6
// Get leap month of lunar
carbon.Parse("2020-08-05 13:14:15").Lunar().LeapMonth() // 4
// Get day of lunar
carbon.Parse("2020-08-05 13:14:15").Lunar().Day() // 16

// Get year in chinese
carbon.Parse("2020-08-05 13:14:15").Lunar().ToYearString() // 二零二零
// Get month in chinese
carbon.Parse("2020-08-05 13:14:15").Lunar().ToMonthString() // 六
// Get day in chinese
carbon.Parse("2020-08-05 13:14:15").Lunar().ToDayString() // 十六
// Get full string in chinese
fmt.Sprintf("%s", carbon.Parse("2020-08-05 13:14:15").Lunar()) // 二零二零年六月十六
carbon.Parse("2020-08-05 13:14:15").Lunar().ToString() // 二零二零年六月十六

// Whether is leap year
carbon.Parse("2020-08-05 13:14:15").Lunar().IsLeapYear() // true
// Whether is leap month
carbon.Parse("2020-08-05 13:14:15").Lunar().IsLeapMonth() // false

// Whether is year of the rat
carbon.Parse("2020-08-05 13:14:15").Lunar().IsRatYear() // true
// Whether is year of the ox
carbon.Parse("2020-08-05 13:14:15").Lunar().IsOxYear() // false
// Whether is year of the tiger
carbon.Parse("2020-08-05 13:14:15").Lunar().IsTigerYear() // false
// Whether is year of the rabbit
carbon.Parse("2020-08-05 13:14:15").Lunar().IsRabbitYear() // false
// Whether is year of the dragon
carbon.Parse("2020-08-05 13:14:15").Lunar().IsDragonYear() // false
// Whether is year of the snake
carbon.Parse("2020-08-05 13:14:15").Lunar().IsSnakeYear() // false
// Whether is year of the horse
carbon.Parse("2020-08-05 13:14:15").Lunar().IsHorseYear() // false
// Whether is year of the goat
carbon.Parse("2020-08-05 13:14:15").Lunar().IsGoatYear() // false
// Whether is year of the monkey
carbon.Parse("2020-08-05 13:14:15").Lunar().IsMonkeyYear() // false
// Whether is year of the rooster
carbon.Parse("2020-08-05 13:14:15").Lunar().IsRoosterYear() // false
// Whether is year of the dog
carbon.Parse("2020-08-05 13:14:15").Lunar().IsDogYear() // false
// Whether is year of the dig
carbon.Parse("2020-08-05 13:14:15").Lunar().IsPigYear() // false

JSON handling

Define model

type Person struct {
    ID  int64  `json:"id"`
    Name string `json:"name"`
    Age int `json:"age"`
    Birthday carbon.ToDateTimeString `json:"birthday"`
    GraduatedAt carbon.ToDateString `json:"graduated_at"`
    CreatedAt carbon.ToTimeString `json:"created_at"`
    UpdatedAt carbon.ToTimestamp `json:"updated_at"`
    DateTime1 carbon.ToTimestampWithSecond `json:"date_time1"`
    DateTime2 carbon.ToTimestampWithMillisecond `json:"date_time2"`
    DateTime3 carbon.ToTimestampWithMicrosecond `json:"date_time3"`
    DateTime4 carbon.ToTimestampWithNanosecond `json:"date_time4"`
}

Instantiate model

person := Person {
	ID:          1,
	Name:        "gouguoyin",
	Age:         18,
	Birthday:    ToDateTimeString{Now().SubYears(18)},
	GraduatedAt: ToDateString{Parse("2020-08-05 13:14:15")},
	CreatedAt:   ToTimeString{Parse("2021-08-05 13:14:15")},
	UpdatedAt:   ToTimestamp{Parse("2022-08-05 13:14:15")},
	DateTime1:   ToTimestampWithSecond{Parse("2023-08-05 13:14:15")},
	DateTime2:   ToTimestampWithMillisecond{Parse("2024-08-05 13:14:15")},
	DateTime3:   ToTimestampWithMicrosecond{Parse("2025-08-05 13:14:15")},
	DateTime4:   ToTimestampWithNanosecond{Parse("2025-08-05 13:14:15")},
}

JSON encode

data, err := json.Marshal(&person)
if err != nil {
	t.Fatal(err)
}
fmt.Printf("%s",data)
// output
{
	"id":1,
	"name":"gouguoyin",
	"age":18,
	"birthday":"2003-07-16 16:22:02",
	"graduated_at":"2020-08-05",
	"created_at":"13:14:15",
	"updated_at":1659676455,
	"date_time1":1691212455,
	"date_time2":1722834855000,
	"date_time3":1754370855000000,
	"date_time4":1754370855000000000
}

JSON decode

str := `{
	"id":1,
	"name":"gouguoyin",
	"age":18,
	"birthday":"2003-07-16 16:22:02",
	"graduated_at":"2020-08-05",
	"created_at":"13:14:15",
	"updated_at":1659676455,
	"date_time1":1691212455,
	"date_time2":1722834855000,
	"date_time3":1754370855000000,
	"date_time4":1754370855000000000
}`
person := new(Person)
err := json.Unmarshal([]byte(str), &person)
if err != nil {
	t.Fatal(err)
}
fmt.Printf("%+v", *person)
// output
{ID:1 Name:gouguoyin Age:18 Birthday:2003-07-16 16:22:02 GraduatedAt:2020-08-05 00:00:00 CreatedAt:0000-01-01 13:14:15 UpdatedAt:2022-08-05 13:14:15 DTime1:2023-08-05 13:14:15 DateTime2:2024-08-05 13:14:15 DateTime3:2025-08-05 13:14:15 DateTime4:2025-08-05 13:14:15}

I18n

If you need to use i18n, please copy Lang directory to project directory first

The following languages are supported

The following methods are supported

DiffForHumans()：to string difference in human friendly readable format
ToMonthString()：to string of month
ToShortMonthString()：to string of short month
ToWeekString()：to string of week
ToShortWeekString()：to string of short week
Constellation()：get constellation name
Season()：get season name

Set locale

lang := NewLanguage()
if err := lang.SetLocale("zh-CN");err != nil {
    // Error handle...
    log.Fatal(err)
}

c := carbon.SetLanguage(lang)
c.Now().AddHours(1).DiffForHumans() // 1 小时后
c.Now().AddHours(1).ToMonthString() // 八月
c.Now().AddHours(1).ToShortMonthString() // 8月
c.Now().AddHours(1).ToWeekString() // 星期二
c.Now().AddHours(1).ToShortWeekString() // 周二
c.Now().AddHours(1).Constellation() // 狮子座
c.Now().AddHours(1).Season() // 夏季

Set dir

lang := NewLanguage()
if err := lang.SetDir("lang");err != nil {
    // Error handle...
    log.Fatal(err)
}

c := carbon.SetLanguage(lang)
Now().AddHours(1).DiffForHumans() // 1 hour from now
Now().AddHours(1).ToMonthString() // August
Now().AddHours(1).ToShortMonthString() // Aug
Now().AddHours(1).ToWeekString() // Tuesday
Now().AddHours(1).ToShortWeekString() // Tue
Now().AddHours(1).Constellation() // Leo
Now().AddHours(1).Season() // Summer

Set some resources(the rest still translate from the given locale)

lang := NewLanguage()

if err := lang.SetLocale("en");err != nil {
	// Error handle...
    log.Fatal(err)
}

resources := map[string]string {
    "hour":"%dh",
}
lang.SetResources(resources)

c := carbon.SetLanguage(lang)
c.Now().AddYears(1).DiffForHumans() // 1 year from now
c.Now().AddHours(1).DiffForHumans() // 1h from now
c.Now().ToMonthString() // August
c.Now().ToShortMonthString() // Aug
c.Now().ToWeekString() // Tuesday
c.Now().ToShortWeekString() // Tue
c.Now().Constellation() // Leo
c.Now().Season() // Summer

Set all resources

lang := NewLanguage()
resources := map[string]string {
    "seasons": "Spring|Summer|Autumn|Winter",
    "months": "January|February|March|April|May|June|July|August|September|October|November|December",
    "months_short": "Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec",
    "weeks": "Sunday|Monday|Tuesday|Wednesday|Thursday|Friday|Saturday",
    "weeks_short": "Sun|Mon|Tue|Wed|Thu|Fri|Sat",
    "constellations": "Aries|Taurus|Gemini|Cancer|Leo|Virgo|Libra|Scorpio|Sagittarius|Capricornus|Aquarius|Pisce",
    "year":"1 yr|%d yrs",
    "month":"1 mo|%d mos",
    "week":"%dw",
    "day":"%dd",
    "hour":"%dh",
    "minute":"%dm",
    "second":"%ds",
    "now": "just now",
    "ago":"%s ago",
    "from_now":"in %s",
    "before":"%s before",
    "after":"%s after",
}
lang.SetResources(resources)

c := carbon.SetLanguage(lang)
c.Now().AddYears(1).DiffForHumans() // in 1 yr
c.Now().AddHours(1).DiffForHumans() // in 1h
c.Now().ToMonthString() // August
c.Now().ToShortMonthString() // Aug
c.Now().ToWeekString() // Tuesday
c.Now().ToShortWeekString() // Tue
c.Now().Constellation() // Leo
c.Now().Season() // Summer

Error handling

If more than one error occurs, only the first error is returned

Scene one

c := carbon.SetTimezone(PRC).Parse("xxx")
if c.Error != nil {
    // Error handle...
    log.Fatal(c.Error)
}
fmt.Println(c.ToDateTimeString())
// Output
cannot parse "xxx" to carbon, please make sure the value is valid

Scene two

c := carbon.SetTimezone("xxx").Parse("2020-08-05")
if c.Error != nil {
    // Error handle...
    log.Fatal(c.Error)
}
fmt.Println(c.ToDateTimeString())
// Output
invalid timezone "xxx", please see the file "$GOROOT/lib/time/zoneinfo.zip" for all valid timezones

Scene three

c := carbon.SetTimezone("xxx").Parse("12345678")
if c.Error != nil {
    // Error handle...
    log.Fatal(c.Error)
}
fmt.Println(c.ToDateTimeString())
// Output
invalid timezone "xxx", please see the file "$GOROOT/lib/time/zoneinfo.zip" for all valid timezones

Appendix

Format sign table

sign	desc	length	range	example
d	Day of the month, 2 digits with leading zeros	2	01-31	05
D	A textual representation of a day, three letters	3	Mon-Sun	Wed
j	Day of the month without leading zeros	-	1-31	5
S	English ordinal suffix for the day of the month, 2 characters. Eg: st, nd, rd or th. Works well with j	2	st/nd/rd/th	th
l	A full textual representation of the day of the week	-	Monday-Sunday	Wednesday
F	A full textual representation of a month	-	January-December	August
m	Numeric representation of a month, with leading zeros	2	01-12	08
M	A short textual representation of a month, three letters	3	Jan-Dec	Aug
n	Numeric representation of a month, without leading zeros	-	1-12	8
y	A two digit representation of a year	2	00-99	20
Y	A full numeric representation of a year, 4 digits	4	0000-9999	2020
a	Lowercase morning or afternoon sign	2	am/pm	pm
A	Uppercase morning or afternoon sign	2	AM/PM	PM
g	12-hour format of an hour without leading zeros	-	1-12	1
G	24-hour format of an hour without leading zeros	-	0-23	15
h	12-hour format of an hour with leading zeros	2	00-11	03
H	24-hour format of an hour with leading zeros	2	00-23	15
i	Minutes with leading zeros	2	01-59	14
s	Seconds with leading zeros	2	01-59	15
c	ISO 8601 date	-	-	2020-08-05T15:19:21+00:00
r	RFC 2822 date	-	-	Thu, 21 Dec 2020 16:01:07 +0200
O	Difference to Greenwich time (GMT) without colon between hours and minutes	-	-	+0200
P	Difference to Greenwich time (GMT) with colon between hours and minutes	-	-	+02:00
T	Timezone abbreviation	-	-	EST
W	ISO-8601 numeric representation of the week of the year	-	1-52	42
N	ISO-8601 numeric representation of the day of the week	1	1-7	6
L	Whether it's a leap year	1	0-1	1
U	Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT)	10	-	1611818268
u	Millisecond	3	-	999
w	Numeric representation of the day of the week	1	0-6	6
t	Total days of the month	2	28-31	30
z	Day of the year	-	0-365	15
e	Location	-	-	America/New_York
Q	Quarter	1	1-4	1
C	Century	-	0-99	21

README.md

Carbon

Introduction

Installation

Usage and example

Yesterday, today and tomorrow

Create carbon instance

Parse as carbon by standard string

Parse as carbon by format string

Parse as carbon by layout string

Convert between carbon and time.Time

Start and end

Addition and subtraction

Difference

Comparison

Output

Getter

Setter

Constellation

Season

Lunar

JSON handling

Define model

Instantiate model

JSON encode

JSON decode

I18n

Set locale

Set dir

Set some resources(the rest still translate from the given locale)

Set all resources

Error handling

Scene one

Scene two

Scene three

Appendix

Format sign table

Reference

Links

README.md Unescape Escape

Carbon

Introduction

Installation

Usage and example

Yesterday, today and tomorrow

Create carbon instance

Parse as carbon by standard string

Parse as carbon by format string

Parse as carbon by layout string

Convert between carbon and time.Time

Start and end

Addition and subtraction

Difference

Comparison

Output

Getter

Setter

Constellation

Season

Lunar

JSON handling

Define model

Instantiate model

JSON encode

JSON decode

I18n

Set locale

Set dir

Set some resources(the rest still translate from the given locale)

Set all resources

Error handling

Scene one

Scene two

Scene three

Appendix

Format sign table

Reference

Links

README.md