Go Persian Calendar

Go Persian Calendar provides functionality for conversion among Persian (Solar Hijri) and Gregorian calendars. A Julian calendar is used as an interface for all conversions. The package name is ptime and it is compatible with the package time. All months are available with both Iranian and Dari Persian names. This source code is licensed under MIT license that can be found in the LICENSE file.

Installation

go get github.com/parsidev/go-persian-calendar

Getting started

1- Import the package ptime. Most of the time you need to import time and fmt packages, too.

import (
    ptime "github.com/parsidev/go-persian-calendar"
    "time"
    "fmt"
)

2- Convert Gregorian calendar to Persian calendar.

// Create a new instance of time.Time
var t time.Time = time.Date(2016, time.January, 1, 12, 1, 1, 0, ptime.Iran())

// Get a new instance of ptime.Time using time.Time
pt := ptime.New(t)

// Get the date in Persian calendar
fmt.Println(pt.Date()) // output: 1394 دی 11

3- Convert Persian calendar to Gregorian calendar.

// Create a new instance of ptime.Time
var pt ptime.Time = ptime.Date(1394, ptime.Mehr, 2, 12, 59, 59, 0, ptime.Iran())

// Get a new instance of time.Time
t := pt.Time()

// Get the date in Gregorian calendar
fmt.Println(t.Date()) // output: 2015 September 24

4- Get the current time.

// Get a new instance of ptime.Time representing the current time
pt := ptime.Now()

// Get year, month, day
fmt.Println(pt.Date()) // output: 1394 بهمن 11
fmt.Println(pt.Year(), pt.Month(), pt.Day()) // output: 1394 بهمن 11

// Get hour, minute, second
fmt.Println(pt.Clock()) // output: 21 54 30
fmt.Println(pt.Hour(), pt.Minute(), pt.Second()) // output: 21 54 30

// Get Unix timestamp (the number of seconds since January 1, 1970 UTC)
fmt.Println(pt.Unix()) // output: 1454277270

// Get yesterday, today and tomorrow
fmt.Println(pt.Yesterday().Weekday()) // output: شنبه
fmt.Println(pt.Weekday()) // output: یک‌شنبه
fmt.Println(pt.Tomorrow().Weekday()) // output: دوشنبه

// Get First and last day of week
fmt.Println(pt.FirstWeekDay().Date()) // output: 1394 بهمن 10
fmt.Println(pt.LastWeekday().Date()) // output: 1394 بهمن 16

// Get First and last day of month
fmt.Println(pt.FirstMonthDay().Weekday()) // output: پنج‌شنبه
fmt.Println(pt.LastMonthDay().Weekday()) // output: جمعه

// Get First and last day of year
fmt.Println(pt.FirstYearDay().Weekday()) // output: شنبه
fmt.Println(pt.LastYearDay().Weekday()) // output: شنبه

// Get the week of month
fmt.Println(pt.MonthWeek()) // output: 3

// Get the week of year
fmt.Println(pt.YearWeek()) // output: 46

// Get the number of remaining weeks of the year
fmt.Println(pt.RYearWeek()) // output: 6

5- Format the time.

// Get a new instance of ptime.Time using Unix timestamp
pt := ptime.Unix(1454277270, 0)

fmt.Println(pt.Format("yyyy/MM/dd E hh:mm:ss a")) // output: 1394/11/11 یک‌شنبه 09:54:30 ب.ظ

// yyyy, yyy, y     year (e.g. 1394)
// yy               2-digits representation of year (e.g. 94)
// MMM              the Persian name of month (e.g. فروردین)
// MMI              the Dari name of month (e.g. حمل)
// MM               2-digits representation of month (e.g. 01)
// M                month (e.g. 1)
// rw               remaining weeks of year
// w                week of year
// W                week of month
// RD               remaining days of year
// D                day of year
// rd               remaining days of month
// dd               2-digits representation of day (e.g. 01)
// d                day (e.g. 1)
// E                the Persian name of weekday (e.g. شنبه)
// e                the Persian short name of weekday (e.g. ش)
// A                the Persian name of 12-Hour marker (e.g. قبل از ظهر)
// a                the Persian short name of 12-Hour marker (e.g. ق.ظ)
// HH               2-digits representation of hour [00-23]
// H                hour [0-23]
// kk               2-digits representation of hour [01-24]
// k                hour [1-24]
// hh               2-digits representation of hour [01-12]
// h                hour [1-12]
// KK               2-digits representation of hour [00-11]
// K                hour [0-11]
// mm               2-digits representation of minute [00-59]
// m                minute [0-59]
// ss               2-digits representation of seconds [00-59]
// s                seconds [0-59]
// ns               nanoseconds
// S                3-digits representation of milliseconds (e.g. 001)
// z                the name of location
// Z                zone offset (e.g. +03:30)

6- Format the time using standard format.

pt := ptime.Date(1394, 7, 2, 14, 7, 8, 0, Iran())

fmt.Println(pt.TimeFormat("2 Jan 2006")) // output: 2 مهر 1394

// 2006        four digit year (e.g. 1399)
// 06          two digit year (e.g. 99)
// 01          two digit month (e.g. 01)
// 1           one digit month (e.g. 1)
// Jan         month name (e.g. آذر)
// January     month name (e.g. آذر)
// 02          two digit day (e.g. 07)
// 2           one digit day (e.g. 7)
// _2          right justified two character day (e.g.  7)
// Mon         weekday (e.g. شنبه)
// Monday      weekday (e.g. شنبه)
// 03          two digit 12 hour format (e.g. 03)
// 3           one digit 12 hour format (e.g. 3)
// 15          two digit 24 hour format (e.g. 15)
// 04          two digit minute (e.g. 03)
// 4           one digit minute (e.g. 03)
// 05          two digit minute (e.g. 09)
// 5           one digit minute (e.g. 9)
// .000        millisecond (e.g. .120)
// .000000     microsecond (e.g. .123400)
// .000000000  nanosecond (e.g. .123456000)
// .999        trailing zeros removed millisecond (e.g. .12)
// .999999     trailing zeros removed microsecond (e.g. .1234)
// .999999999  trailing zeros removed nanosecond (e.g. .123456)
// PM          full 12-Hour marker (e.g. قبل از ظهر)
// pm          short 12-Hour marker (e.g. ق.ظ)
// MST         the name of location
// -0700       zone offset (e.g. +0330)
// -07         zone offset (e.g. +03)
// -07:00      zone offset (e.g. +03:30)
// Z0700       zone offset (e.g. +0330)
// Z07:00      zone offset (e.g. +03:30)

Limitations

• The minimum value of Gregorian year is 1097, otherwise a zero instance of ptime.Time is returned.

Documentation

Please read the documentation for more information about methods and functionality available for ptime.Time, ptime.Month, ptime.Weekday and ptime.AmPm.