Friday 22 January

How it was decided

1. 01

   Aṅga

   Saptamī runs from 05:35 on Fri 22 Jan to 06:38 on Sat 23 Jan.

   2010-01-21T21:34:31Z → 2010-01-22T22:37:43Z

2. 02

   Kāla

   Aruṇodaya is 2 muhūrtas before sunrise: 05:40–07:32 on the 22nd, 05:39–07:32 on the 23rd.

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

3. 03

   Rule

   Saptamī must be present during aruṇodaya. It covers 113 of 113 minutes on the 22nd and 59 of 113 on the 23rd.

   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 305 s

5. 05

   Ruling

   Ratha Saptamī, Baoding, 2010: Friday 22 January.

   confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Ratha Saptamī 2010 falls on Friday 22 January. Saptamī runs from 05:35 on Fri 22 Jan to 06:38 on Sat 23 Jan and covers all of aruṇodaya that dawn. It also reaches the next dawn for 59 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.