Sunday 6 February

How it was decided

1. 01

   Aṅga

   Caturthī runs from 17:02 on Sun 6 Feb to 19:36 on Mon 7 Feb.

   2011-02-06T09:02:15Z → 2011-02-07T11:36:01Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 17:44–19:33 on the 6th, 17:45–19:34 on the 7th.

   pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

3. 03

   Rule

   Caturthī must be present during pradoṣa. It covers 109 of 109 minutes on the 6th and 108 of 108 on the 7th.

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

4. 04

   Tie-break

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

   priority: unstated → greater-coverage · margin 134 s < 300 s

5. 05

   Ruling

   Tila Caturthī, Baoding, 2011: Sunday 6 February.

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

Say it like this

In Baoding, Tila Caturthī 2011 falls on Sunday 6 February. Caturthī runs from 17:02 on Sun 6 Feb to 19:36 on Mon 7 Feb and covers all of pradoṣa that evening. It also reaches the next evening for 108 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 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.