About Mazalogy
Hebrew calendar tools, cultural learning and symbolic reflection, with sources and an explanation of our approach.
A calendar for curiosity and reflection
Mazalogy brings together the Hebrew calendar, source-linked cultural learning and practical reflection tools. Explore your Hebrew birthday, calendar traditions, gematria and the symbolic associations of months and letters.
Cultural learning and symbolic reflection inspired by the Gra version of Sefer Yetzirah. Jewish views on astrology differ. These are not scientific predictions or religious rulings.
A clear method. Room for meaning.
Your Hebrew birth month supplies the traditional month, sign and letter in the Gra version of Sefer Yetzirah. A separate planetary chart calculates tropical geocentric positions from your civil birth details. These two layers can have different signs. Both Adars share the Adar symbolism as our editorial convention; uncertain evenings retain both Hebrew dates. Birth time and location are needed for the Ascendant and whole-sign houses.
Sources and editorial approach
Prepared with AI assistance using the linked sources and original worked examples. Calendar conventions and differences between traditions are identified where relevant.