Friday 10 February

How it was decided

1. 01

   Aṅga

   Caturthī runs from 16:47 on Fri 10 Feb to 19:29 on Sat 11 Feb.

   2073-02-10T08:46:40Z → 2073-02-11T11:29:05Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 17:50–19:37 on the 10th, 17:51–19:38 on the 11th.

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

3. 03

   Rule

   Caturthī must be present during pradoṣa. It covers 107 of 107 minutes on the 10th and 98 of 107 on the 11th.

   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 537 s

5. 05

   Ruling

   Tila Caturthī, Baoding, 2073: Friday 10 February.

   confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Tila Caturthī 2073 falls on Friday 10 February. Caturthī runs from 16:47 on Fri 10 Feb to 19:29 on Sat 11 Feb and covers all of pradoṣa that evening. It also reaches the next evening for 98 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.