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Bodhastra
Your birth date

Date-only systems resolve immediately. Systems that require a birth time or place will say so instead of guessing.

Traditions to include

Choose one or several. With no choices, general browsing shows every tradition.

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Long Count, Tzolk’in and Haab’ — distinct counts linked through one visibly named correlation.

facts · modular counts

One elapsed-day number drives every result

Conversion does not search a date table. It subtracts the named epoch, then decomposes and reduces the resulting whole-day count.

The independent cycles
countconstructionreturns after
Long Countbase 20, except 18 uinal per tunlinear within the displayed positions
Tzolk’in13 numbers × 20 names260 days
Haab’18 × 20 days + 5 Wayeb’365 days
Calendar Roundleast common multiple of 260 and 36518,980 days · 52 Haab’

A Gregorian leap day is not skipped. It is another elapsed day, so every Maya count advances normally. This is one of the mechanical differences from modern 13-Moon/Dreamspell products.

Fixture before interpretation

The test suite checks the Smithsonian’s 1 January 2000 and 20–21 December 2012 examples, the creation-era alignment, and a seventh-century monument date published by The Met. Only after those independent values agree does the UI print a result.

Open the fixture sources →

Bodhastra documents what astrological traditions have said, and when they started saying it. It is presented as cultural history and entertainment. Nothing here is medical, psychological, financial or predictive advice, and nothing here is a claim about what will happen to you.

Every source, listed

Place data from GeoNames, used under CC BY 4.0.