Astronomical

NAME

Date::Calendar::Bahai::Astronomical - Conversions from / to the astronomical Baháʼí calendar

SYNOPSIS

Converting a Gregorian date (e.g. 17th May 2021) into Baháʼí


use Date::Calendar::Bahai::Astronomical;
my Date $dt-greg;
my Date::Calendar::Bahai::Astronomical $dt-bahai;

$dt-greg  .= new(2021, 5, 17);
$dt-bahai .= new-from-date($dt-greg);

say $dt-bahai;
# --> 0178-04-02
say $dt-bahai.strftime("%A %d %B %Y");
# --> Kamál 02 ‘Aẓamat 0178

Converting a Bahai date (e.g. Jalál 1 Bahá 178) into Gregorian

use Date::Calendar::Bahai::Astronomical;
my  Date::Calendar::Bahai::Astronomical $dt-bahai;
my  Date $dt-greg;

$dt-bahai .= new(year => 178, month => 1, day => 1);
$dt-greg   = $dt-bahai.to-date;

say $dt-greg;
# --> 2021-03-20

DESCRIPTION

Date::Calendar::Bahai::Astronomical is a class representing dates in the astronomical Baháʼí calendar, as defined by the 2015 reform. It allows you to convert a Baháʼí date into Gregorian or into other implemented calendars, and it allows you to convert dates from Gregorian or from other calendars into Baháʼí.

The distribution provides also the Date::Calendar::Bahai class which gives the arithmetic version of the Baháʼí calendar. For Gregorian dates in the 1844--2014 interval, that is before the reform, the arithmetic and astronomical versions give the same results.

The astronomical Baháʼí calendar is only partially implemented. It can represent dates only in the 1 to 221 years (1844 to 2064 in the Gregorian calendar).

Please see Date::Calendar::Bahai for the complete documentation.