Module islamic

Expand description

Various islamic lunar calendars

Structs§

Location: A Location on the Earth given as a latitude, longitude, elevation, and standard time zone. Latitude is given in degrees from -90 to 90, longitude in degrees from -180 to 180, elevation in meters, and zone as a UTC offset in fractional days (ex. UTC+1 would have zone = 1.0 / 24.0)

CAIRO: Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/main/calendar.l#L6898
ISLAMIC_EPOCH_FRIDAY: Different islamic calendars use different epochs (Thursday vs Friday) due to disagreement on the exact date of Mohammed’s migration to Mecca. Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/main/calendar.l#L2066
ISLAMIC_EPOCH_THURSDAY: Different islamic calendars use different epochs (Thursday vs Friday) due to disagreement on the exact date of Mohammed’s migration to Mecca. Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/main/calendar.l#L2066
MEAN_YEAR_LENGTH: The average length of an Islamic year, equal to 12 moon cycles
MECCA: The location of Mecca; used for Islamic calendar calculations.

fixed_from_observational_islamic: Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/main/calendar.l#L6904
fixed_from_saudi_islamic: Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/main/calendar.l#L6981
fixed_from_tabular_islamic: Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/main/calendar.l#L2076
observational_islamic_from_fixed: Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/1ee51ecfaae6f856b0d7de3e36e9042100b4f424/calendar.l#L6983-L6995
observational_islamic_month_days: The number of days in a month for the observational islamic calendar
saudi_islamic_from_fixed: Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/main/calendar.l#L6996
saudi_islamic_month_days: The number of days in a month for the Saudi (Umm Al-Qura) calendar
saudi_new_month_on_or_before: Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/main/calendar.l#L6966
tabular_islamic_from_fixed: Lisp code reference: https://github.com/EdReingold/calendar-code2/blob/main/calendar.l#L2090