Monday 3 February

How it was decided

1. 01

   Aṅga

   Pañcamī runs from 11:29 on Mon 3 Feb to 12:46 on Tue 4 Feb.

   1930-02-03T03:28:58Z → 1930-02-04T04:45:41Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 3rd, 12:08–12:56 on the 4th.

   madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

3. 03

   Rule

   Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 37 of 48 on the 4th.

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

4. 04

   Tie-break

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

   priority: unstated → greater-coverage · margin 641 s

5. 05

   Ruling

   Vasanta Pañcamī, Baoding, 1930: Monday 3 February.

   confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Vasanta Pañcamī 1930 falls on Monday 3 February. Pañcamī runs from 11:29 on Mon 3 Feb to 12:46 on Tue 4 Feb and covers all of madhyāhna that midday. It also reaches the next midday for 37 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

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Who says what

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