Sunday 31 March

How it was decided

1. 01

   Aṅga

   Navamī runs from 12:20 on Sat 30 Mar to 11:59 on Sun 31 Mar.

   1985-03-30T04:19:45Z → 1985-03-31T03:58:41Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 30th, 11:38–12:26 on the 31st.

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

3. 03

   Rule

   Navamī must be present during madhyāhna. It covers 7 of 48 minutes on the 30th and 20 of 48 on the 31st.

   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 406 s

5. 05

   Ruling

   Rāma Navamī, Shaoxing, 1985: Sunday 31 March.

   confidence: boundary (tie-break-unstated)

Say it like this

In Shaoxing, Rāma Navamī 1985 falls on Sunday 31 March. Navamī runs from 12:20 on Sat 30 Mar to 11:59 on Sun 31 Mar and covers 20 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 7 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.