Saturday 10 February

How it was decided

1. 01

   Aṅga

   Saptamī runs from 05:05 on Sat 10 Feb to 07:12 on Sun 11 Feb.

   2057-02-09T21:05:05Z → 2057-02-10T23:12:26Z

2. 02

   Kāla

   Aruṇodaya is 2 muhūrtas before sunrise: 05:28–07:15 on the 10th, 05:27–07:14 on the 11th.

   arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′

3. 03

   Rule

   Saptamī must be present during aruṇodaya. It covers 108 of 108 minutes on the 10th and 105 of 107 on the 11th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

4. 04

   Tie-break

   Both dawns qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

   priority: unstated → greater-coverage · margin 114 s < 300 s

5. 05

   Ruling

   Ratha Saptamī, Baoding, 2057: Saturday 10 February.

   confidence: boundary (margin, tie-break-unstated)

Say it like this

In Baoding, Ratha Saptamī 2057 falls on Saturday 10 February. Saptamī runs from 05:05 on Sat 10 Feb to 07:12 on Sun 11 Feb and covers all of aruṇodaya that dawn. It also reaches the next dawn for 105 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 1 min 54 s from a threshold: treat the date as contested.

Copy with citation

Who says what

Institutional rulings are recorded with a source address, and are never edited to agree.