Monday 21 January

How it was decided

1. 01

   Aṅga

   Pañcamī runs from 12:36 on Sun 20 Jan to 12:36 on Mon 21 Jan.

   1991-01-20T04:35:44Z → 1991-01-21T04:36:25Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 12:05–12:53 on the 20th, 12:05–12:53 on the 21st.

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

3. 03

   Rule

   Pañcamī must be present during madhyāhna. It covers 17 of 48 minutes on the 20th and 31 of 48 on the 21st.

   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 1021 s

5. 05

   Ruling

   Vasanta Pañcamī, Baoding, 1991: Monday 21 January.

   confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Vasanta Pañcamī (Basant Panchami) 1991 falls on Monday 21 January. Pañcamī runs from 12:36 on Sun 20 Jan to 12:36 on Mon 21 Jan and covers 31 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 17 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.