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Powerful yet original Dart Jalali date and time for developers.

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Creat a JDate object from DateTime

DateTime extension toJDate() creates a JDate object for you:

  print(DateTime.now().toJDate());                          // 1399/04/29 16:32:36
  print(DateTime(2020).toJDate());                          // 1398/10/11 00:00:00
  print(DateTime(2020, 7).toJDate());                       // 1399/04/11 00:00:00
  print(DateTime(2020, 7, 16).toJDate());                   // 1399/04/26 00:00:00
  print(DateTime(2020, 7, 16, 12).toJDate());               // 1399/04/26 12:00:00
  print(DateTime(2020, 7, 16, 12, 18).toJDate());           // 1399/04/26 12:18:00
  print(DateTime(2020, 7, 16, 12, 18, 30).toJDate());       // 1399/04/26 12:18:30
  print(DateTime(2020, 7, 16, 12, 18, 30, 450).toJDate());  // 1399/04/26 12:18:30

JDate(year, month, ...) with shamsi date parameters

You can creates a new jalali date object with a specified shamsi date and time.

    print(JDate.now());                         // 1399/04/29 16:32:36
    print(JDate(1399));                         // 1399/01/01 00:00:00
    print(JDate(1399, 4));                      // 1399/04/01 00:00:00  
    print(JDate(1399, 4, 15));                  // 1399/04/15 00:00:00
    print(JDate(1399, 4, 15, 20));              // 1399/04/15 20:00:00
    print(JDate(1399, 4, 15, 20, 25));          // 1399/04/15 20:25:00
    print(JDate(1399, 4, 15, 20, 25, 30));      // 1399/04/15 20:25:30
    print(JDate(1399, 4, 15, 20, 25, 30, 650)); // 1399/04/15 20:25:30

Other Constructors

  • JDate.utc(int year, [int month = 1,int day = 1,int hour = 0,int minute = 0,int second = 0,int millisecond = 0,int microsecond = 0 ])
  • JDate.fromDateTime(DateTime date)
  • JDate.fromMicrosecondsSinceEpoch(int microsecondsSinceEpoch, {bool isUtc = false})
  • JDate.fromMillisecondsSinceEpoch(int millisecondsSinceEpoch, {bool isUtc = false})
  • JDate.now()

JDate(...).echo

    var jd = JDate(2019, 4, 3, 10, 33, 30, 0);
    print(jd.echo('l، d F Y ساعت H:i:s'));      // چهارشنبه، 03 تیر 2019 ساعت 10:33:30
Method Description Range Example
a Before noon and afternoon ق.ظ - ب.ظ ق.ظ
b Numeric representation of a season, without leading zeros 0-3 1
d Day of the month, 2 digits with leading zeros 01-31 13
f Season name بهار-زمستان بهار
g 12-hour format of an hour without leading zeros 0-12 11
h 12-hour format of an hour with leading zeros 00-12 03
i Minutes with leading zeros 00-59 13
j Day of the month without leading zeros 1-31 4
l A full textual representation of the day of the week شنبه-جمعه یکشنبه
m Numeric representation of a month, with leading zeros 01-12 02
n Numeric representation of a month, without leading zeros 1-12 2
s Seconds, with leading zeros 00-59 03
t Number of days in the given month 0-31 28
u Millisecond 000000 28
v Short year display in letters یک-نهصد و نود و نه نود و هشت
w Numeric representation of the day of the week 0-6 6
y A two or three digit representation of a year 1-999 98
A Before noon and afternoon بعد از ظهر - قبل از ظهر قبل از ظهر
D Persian ordinal suffix for the day of the month, 2 characters شن‍ - جم‍ سه
F A full textual representation of a month فروردین - اسفند اردیبهشت
G 24-hour format of an hour without leading zeros 0-24 3
H 24-hour format of an hour with leading zeros 00-24 03
J Day of the month یک-سی و یک سیزده
L Whether it’s a leap year 0-1 1
M A short textual representation of a month, two letters فر-اس‍ ار
O Difference to Greenwich time (GMT) in hours -1200 - +1400 +0330
V Full year display in letters صفر-... یک هزار و سیصد و نود و هشت
Y A full numeric representation of a year, 4 digits 0-... 1398

JDate.parse(...)

You can parse specified shamsi or date from valid date string to convert it to JDate object.

  print(JDate.parse('1399/09/09 13:27:00'));  // 1399/09/09 13:27:00
  print(JDate.parse('1399-09-09 13:27:00'));  // 1399/09/09 13:27:00
  print(JDate.parse('۱۳۹۹/۰۹/۰۹'));           // 1399/09/09 00:00:00
  print(JDate.parse('1399/02/13'));           // 1399/02/13 00:00:00
  print(JDate.parse(JDate(1378).toString())); // 1378/01/01 00:00:00

JDate Parameters

Parameters Description Type Access
microsecondsSinceEpoch The number of microseconds since the 'Unix epoch' 1970-01-01T00:00:00Z (UTC). int read/write
millisecondsSinceEpoch The number of milliseconds since the 'Unix epoch' 1970-01-01T00:00:00Z (UTC). int read/write
microsecond The microsecond 0...999. int read/write
millisecond The millisecond 0...999. int read/write
second The second 0...59. int read/write
minute The minute 0...59. int read/write
hour The hour of the day, expressed as in a 24-hour clock 0..23. int read/write
day The day of the month 1..31. int read/write
month The month 1..12. int read/write
year The year. int read/write
weekday The day of the week 1...7. int read
timeZoneOffset Difference between local time and UTC. Duration read
timeZoneName The time zone name. String read
isUtc True if this JDate is set to UTC time. bool read
isLeapYear True if this JDate.year is a leap year. bool read
weekdayName Returns the name of weekDay in persian. String read
monthName Returns the name of month in persian. String read
shortYear Returns the short version of year. int read
monthLength Returns number of days in that month. int read

JDate Instance Methods

Method Description
changeTo({int year,int month,...,bool isUtc}) Change a JDate instance to specified parameters.
echo(String format) returns String of JDate base on given format.
toString() Returns a human-readable string for this instance.
toDateTime() Converts this JDate to a DateTime object with gregorian date.
add(Duration duration) Returns a new JDate instance with duration added to this.
subtract(Duration duration) Returns a new JDate instance with duration subtracted from this.
isAtSameMomentAs(JDate other) Returns true if this occurs at the same moment as other.
isBefore(JDate other) Returns true if this occurs before other.
isAfter(JDate other) Returns true if this occurs after other.
Duration difference(JDate other) Returns a Duration with the difference when subtracting other from this.
compareTo(JDate other) Compares this JDate object to other, returning zero if the values are equal.
toIso8601String() Returns an ISO-8601 full-precision extended format representation.
toUtc() Returns this JDate value in the UTC time zone.
toLocal() Returns this JDate value in the local time zone.

Static methods

These methods can be used without creating an instance of the object:

Method Description
parse(String string) Parse the string an returns a JDate object, throws Exception if string is not valid
tryParse(String string) Tries to parse the string an returns a JDate object, returns null if string is not valid
jalaliToGregorian(int year, int month, int date) Converts Jalali date to Gregorian and return the result as a BasicDate
gregorianToJalali(int year, int month, int date) Converts Gregorian date to Jalali and return the result as a BasicDate
ummalquraToGregorian(int year, int month, int date) Converts Ummalqura date to Gregorian and return the result as a BasicDate
gregorianToUmmalqura(int year, int month, int date) Converts Gregorian date to Ummalqura and return the result as a BasicDate
ummalquraToJalali(int year, int month, int date) Converts Jalali date to Ummalqura and return the result as a BasicDate
jalaliToUmmalqura(int year, int month, int date) Converts Ummalqura date to Jalali and return the result as a BasicDate
islamicToGregorian(int year, int month, int date) Converts Islamic date to Gregorian and return the result as a BasicDate
gregorianToIslamic(int year, int month, int date) Converts Gregorian date to Islamic and return the result as a BasicDate
islamicToJalali(int year, int month, int date) Converts Islamic date to Jalali and return the result as a BasicDate
jalaliToIslamic(int year, int month, int date) Converts Jalali date to Islamic and return the result as a BasicDate

Extension Methods

These methods can be used on mentioned objects:

Method Description
String.numbersToEnglish() Converts Persian digits in string to english digits
String.numbersToPersian() Converts English digits in string to Persian digits
int.toPersianWords(bool ordinal) Returns number as Persian text
DateTime.toJdate() Creates a JDate base on DateTime gregorian date

License

jdate_dart is available under the BSD 3 Clause license.

Copyright Notice

The initial version of this library had been written based on JDate.js by Reza Moghaddam.
Date Conversion methods written based on Roozbeh Pournader and Mohammad Toossi work

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