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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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The Graves tree calendar: a living modern reconstruction, kept distinct from ancient ogham evidence.

Calculators · modern Graves-derived map

Your modern tree sign

This reproduces a popular twentieth-century fixed-date system. It is not a conversion into an ancient Celtic calendar, and the answer carries no personality verdict.

Date of birth modern fixed-date Graves-derived mapping

Supported dates: 1900–2100. The year is used only to validate the civil date; the tree ranges repeat on the Gregorian calendar.

Why this is not a lunar calculation

A true lunar calendar follows observed or calculated moons and needs intercalation rules. This popular version fixes the tree periods to Gregorian month-days; in leap years, the Ash range even contains 29 civil days. The calculator names that compromise instead of calling it astronomy. See the variants and date contract →

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.