Wednesday 2 March

How it was decided

1. 01

   Aṅga

   Caturdaśī runs from 22:16 on Wed 2 Mar to 00:26 on Fri 4 Mar.

   2011-03-02T16:16:29Z → 2011-03-03T18:25:45Z

2. 02

   Kāla

   Niśītha is 1 ghaṭikā either side of midnight: 23:41–00:29 on the 2nd, 23:40–00:28 on the 3rd.

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

3. 03

   Rule

   Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 2nd and 45 of 48 on the 3rd.

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

4. 04

   Tie-break

   Both nights qualify and the cited authorities disagree. The one covered longer is ruled, as a boundary.

   priority: disputed → greater-coverage · margin 162 s < 300 s

5. 05

   Ruling

   Mahāśivarātri, Chattogram, 2011: Wednesday 2 March.

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

Say it like this

In Chattogram, Mahāśivarātri 2011 falls on Wednesday 2 March. Caturdaśī runs from 22:16 on Wed 2 Mar to 00:26 on Fri 4 Mar and covers all of niśītha that night. It also reaches the next night for 45 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 2 min 42 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.