Friday 20 April

How it was decided

1. 01

   Aṅga

   Navamī runs from 10:46 on Fri 20 Apr to 12:41 on Sat 21 Apr.

   2040-04-20T02:45:31Z → 2040-04-21T04:41:24Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 20th, 11:53–12:41 on the 21st.

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

3. 03

   Rule

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

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

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 14 s < 300 s

5. 05

   Ruling

   Rāma Navamī, Baoding, 2040: Friday 20 April.

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

Say it like this

In Baoding, Rāma Navamī 2040 falls on Friday 20 April. Navamī runs from 10:46 on Fri 20 Apr to 12:41 on Sat 21 Apr and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 0 min 14 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.