Ruling · Gaurī Tṛtīyā (Gangaur) · 1920

Tuesday 23 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 43 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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 Monday 22 March

Tṛtīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:24  12:12 madhyāhna ends
10:3611:0011:2411:4812:1212:3613:00

0 of 48 minutes covered

Midday of Tuesday 23 March

Taken. The only midday Tṛtīyā reaches.

madhyāhna begins 11:23  12:11 madhyāhna ends
Tṛtīyā ends 12:54:23
10:3510:5911:2311:4712:1112:3512:59

48 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 15:08 on Mon 22 Mar to 12:54 on Tue 23 Mar.

    1920-03-22T07:08:20Z → 1920-03-23T04:54:23Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 22nd, 11:23–12:11 on the 23rd.

    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 22nd and 48 of 48 on the 23rd.

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

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 2588 s

  5. 05

    Ruling

    Gaurī Tṛtīyā, Daqing, 1920: Tuesday 23 March.

    confidence: determinate

Say it like this

In Daqing, Gaurī Tṛtīyā (Gangaur) 1920 falls on Tuesday 23 March. Tṛtīyā runs from 15:08 on Mon 22 Mar to 12:54 on Tue 23 Mar and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1920/gauri-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 23 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 23 Mar
compat-drikpanchangComparison profileTue 23 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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles23:08 → 20:5411:3648 min11:360 min22 Mar
Chicago01:08 → 22:5411:3448 min11:340 min22 Mar
Jersey City02:08 → 23:5411:4048 min11:390 min22 Mar
Port of Spain03:08 → 00:5411:4948 min11:490 min22 Mar
London07:08 → 04:5411:4448 min11:440 min22 Mar
Durban09:08 → 06:5411:3948 min11:380 min22 Mar
Dubai11:08 → 08:5412:0248 min12:020 min22 Mar
Delhi12:38 → 10:2412:0414 min12:040 min22 Mar
Kolkata12:38 → 10:2411:200 min11:200 min23 Mar
Singapore14:08 → 11:5411:480 min11:477 min23 Mar
Sydney17:08 → 14:5411:380 min11:3848 min23 Mar
Suva19:08 → 16:5411:490 min11:4948 min23 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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