Ruling · Gaurī Tṛtīyā (Gangaur) · 1963

Thursday 28 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 27 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Wednesday 27 March

Tṛtīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:22  12:10 madhyāhna ends
Tṛtīyā begins 12:37:28
10:3410:5811:2211:4612:1012:3412:58

0 of 48 minutes covered

Midday of Thursday 28 March

Taken. Tṛtīyā reaches neither midday; the rule takes the second day.

madhyāhna begins 11:22  12:10 madhyāhna ends
10:3410:5811:2211:4612:1012:3412:58

0 of 48 minutes covered

Tṛtīyā presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Tṛtīyā runs from 12:37 on Wed 27 Mar to 09:03 on Thu 28 Mar.

    1963-03-27T04:37:28Z → 1963-03-28T01:02:47Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 27th, 11:22–12:10 on the 28th.

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

  3. 03

    Rule

    Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 27th and 0 of 48 on the 28th.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: unstated → second-day · margin 1639 s

  5. 05

    Ruling

    Gaurī Tṛtīyā, Daqing, 1963: Thursday 28 March.

    confidence: determinate

Say it like this

In Daqing, Gaurī Tṛtīyā (Gangaur) 1963 falls on Thursday 28 March. Tṛtīyā runs from 12:37 on Wed 27 Mar to 09:03 on Thu 28 Mar, and reaches madhyāhna on neither day.

ahargana.org/daqing/festivals/1963/gauri-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 28 Mar
Ahargaṇa, classicalDisc centre, no refractionThu 28 Mar
compat-drikpanchangComparison profileWed 27 Mar
No institution has a recorded ruling for Daqing.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/gauri-tritiya · ruleset 2026.3-draft

Month
Caitra, amānta
Pakṣa · aṅga
Śukla · Tṛtīyā
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 102

“S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceTṛtīyāMadhyāhna 27thCoveredMadhyāhna 28thCoveredRuled
Los Angeles20:37 → 17:0311:3548 min11:340 min27 Mar
Chicago22:37 → 19:0311:3348 min11:320 min27 Mar
Jersey City23:37 → 20:0311:3848 min11:380 min27 Mar
Port of Spain00:37 → 21:0311:4848 min11:470 min27 Mar
London04:37 → 01:0311:4348 min11:420 min27 Mar
Durban06:37 → 03:0311:3748 min11:370 min27 Mar
Dubai08:37 → 05:0312:0148 min12:000 min27 Mar
Delhi10:07 → 06:3312:0348 min12:030 min27 Mar
Kolkata10:07 → 06:3311:1848 min11:180 min27 Mar
Singapore12:07 → 08:3312:1648 min12:160 min27 Mar
Sydney14:37 → 11:0311:370 min11:360 min28 Mar
Suva16:37 → 13:0311:480 min11:4848 min28 Mar
Profile · tradition
pac-rp@2026.1 · smarta
Rule
gauri-tritiya@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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