Friday 16 February

How it was decided

1. 01

   Aṅga

   Saptamī runs from 06:46 on Thu 15 Feb to 08:23 on Fri 16 Feb.

   1940-02-14T22:45:38Z → 1940-02-16T00:23:02Z

2. 02

   Kāla

   Aruṇodaya is 2 muhūrtas before sunrise: 05:25–07:12 on the 15th, 05:24–07:10 on the 16th.

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

3. 03

   Rule

   Saptamī must be present during aruṇodaya. It covers 26 of 107 minutes on the 15th and 106 of 106 on the 16th.

   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 1564 s

5. 05

   Ruling

   Ratha Saptamī, Baoding, 1940: Friday 16 February.

   confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Ratha Saptamī 1940 falls on Friday 16 February. Saptamī runs from 06:46 on Thu 15 Feb to 08:23 on Fri 16 Feb and covers all of aruṇodaya that dawn. It also reaches the previous dawn for 26 minutes; the rule does not say which to take, and the one covered longer is ruled: 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.