Siddhanta Parity API Documentation - v1.3.0
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    • Standardize Ahargana anchor for daily Panchanga elements.

      [Ch. XIV, v.18]

      Siddhantic Proof: Manadhya (Systems of Measurement) v.18

      Sanskrit (Devanagari):

      उदयादुदयं भानोः सावनं तत्‌ प्रकीर्तितम्‌।

      Translation (Burgess):

      The time from one sunrise to the next is designated as a Savana (civil) day.

      Modern Technical Commentary:

      Defines the fundamental civil day. This sunrise-to-sunrise period is the basis for determining the weekday (Vara), the planetary hours (Hora), and the divisions used in Muhurta calculations like Choghadia.

      Siddhantic Proof: Manadhya (Systems of Measurement) v.18

      Sanskrit (Devanagari):

      उदयादुदयं भानोः सावनं तत्‌ प्रकीर्तितम्‌।

      Translation (Burgess):

      The time from one sunrise to the next is designated as a Savana (civil) day.

      Modern Technical Commentary:

      Defines the fundamental civil day. This sunrise-to-sunrise period is the basis for determining the weekday (Vara), the planetary hours (Hora), and the divisions used in Muhurta calculations like Choghadia.

      In the Surya-Siddhanta, a civil day (Savana-dina) begins at the moment of local sunrise. To find the 'Elements for the Day', we must identify the state of the planets at this exact moment (Udaya-kaala).

      Parameters

      • ahargana: number

        Current decimal day count

      • sunriseHours: number

        Hours past midnight of local sunrise

      Returns number

      The integer Ahargana corresponding to the start of the Vedic day