Module calendrica-tibetan
Tibetan calendar conversions.
Ported from "Calendrical Calculations" (4th edition) by Nachum Dershowitz and Edward M. Reingold. Original Lisp code (CALENDRICA 4.0) is Apache 2.0 licensed.
Info:
- Release: 0.1 2026-07-19
Functions
| fixed_from_tibetan (t_date) | Fixed date corresponding to Tibetan lunar date `t_date`. |
| tibetan_from_fixed (date) | Tibetan lunar date {year,month,leap_month,day,leap_day} corresponding to fixed `date`. |
| tibetan_leap_month_p (t_year, t_month) | True if month `t_month` is a leap month in Tibetan year `t_year`. |
| tibetan_leap_day_p (t_year, t_month, t_day) | True if day `t_day` is a leap day in Tibetan month `t_month` of year `t_year`. |
Functions
- fixed_from_tibetan (t_date)
-
Fixed date corresponding to Tibetan lunar date `t_date`.
Parameters:
- t_date table Tibetan date {year, month, leap_month, day, leap_day}.
Returns:
-
number
Fixed date.
- tibetan_from_fixed (date)
-
Tibetan lunar date {year,month,leap_month,day,leap_day} corresponding to fixed `date`.
Parameters:
- date number Fixed date.
Returns:
-
table
{year, month, leap_month, day, leap_day}
- tibetan_leap_month_p (t_year, t_month)
-
True if month `t_month` is a leap month in Tibetan year `t_year`.
Parameters:
- t_year number Tibetan year.
- t_month number Tibetan month.
Returns:
-
boolean
- tibetan_leap_day_p (t_year, t_month, t_day)
-
True if day `t_day` is a leap day in Tibetan month `t_month` of year `t_year`.
Parameters:
- t_year number Tibetan year.
- t_month number Tibetan month.
- t_day number Tibetan day.
Returns:
-
boolean