Julian Calendar

Note

Julian calendar: https://en.wikipedia.org/wiki/Julian_calendar

Proleptic Julian calendar is implemented by julian() helper and JulianCalendar factory. Years are assumed to be in the astronomical notation. (1 AD is 1, 1 BC is 0, 2 BC is -1) The date range is -5884202-03-16 to 5874777-10-17 for a 32-bit system and -25252216391119773-08-11 to 25252216391110348-05-22 on a 64-bit system.

Factories

You can create an instance of date from either date components or a Y-m-d string format (years can be negative):

<?php

use Arokettu\Date\JulianCalendar;
use Arokettu\Date\Month;

$date = JulianCalendar::create(2100, 2, 29);
// or use a month object
$date = JulianCalendar::create(2100, Month::February, 29);
// or parse Y-m-d
$date = JulianCalendar::parse('2100-02-29');
// years may be negative and leading zeroes are ignored
$date = JulianCalendar::parse('-5000-2-000001'); // works too!

Getters

There are getters for day, month, year, string representation and array representation:

<?php

use Arokettu\Date\JulianCalendar;

$date = JulianCalendar::parse('2100-02-29');

$date->julian()->getDay(); // 29
$date->julian()->getMonth(); // Month::February
$date->julian()->getMonthNumber(); // 2
$date->julian()->getYear(); // 2100
$date->julian()->getDateArray(); // [$y, $m, $d]: [2100, 2, 29]
$date->julian()->toString(); // Y-m-d: 2100-02-29