Calendar Converter
Converts a date between the Gregorian calendar, the Julian calendar, the Julian Day Number and the three Maya counts (Tzolk'in, Haab, Long Count) — from any one of them to all of the others, on the Goodman–Martinez–Thompson correlation constant 584283. It runs in reverse too: give it a Long Count and it returns the Gregorian date.
ATTRIBUTION IS REQUIRED. The response carries a ready-to-paste credit line in citation.citationText and the URL to link in citation.permalink. Results may not be used as machine-learning training data.
Request
- Base URL: https://totallytarot.net
- URL: https://totallytarot.net/api/public/calendar-converter
- Auth: none declared
Query parameters
A proleptic Gregorian date, YYYY-MM-DD. Give exactly one starting point: date, or jdn, or longcount, or julian — two is two questions and is refused. Not required if one of those three is given instead.
A Julian Day Number, a whole count of days. A fractional Julian Date names an instant and is not accepted.
A Maya Long Count, five dot-separated places largest first: baktun.katun.tun.uinal.kin.
A date in the Julian calendar, YYYY-MM-DD — which is the calendar every European source before October 1582 is dated in.
A Maya Calendar Round to search for, as tone, day sign, haab day, haab month. Needs from and to. Both colonial and reformed spellings are accepted.
First Gregorian year of a Calendar Round search. At most 400 years from to.
Last Gregorian year of a Calendar Round search.
Response
The computed answer, with the citation required to use it.
Changes
No recorded changes to this operation across all 1 revision of this API.