Ruling · Gaurī Tṛtīyā (Gangaur) · 2013

Saturday 13 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 431 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Friday 12 April

Tṛtīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:55  12:43 madhyāhna ends
11:0711:3111:5512:1912:4313:0713:31

0 of 48 minutes covered

Midday of Saturday 13 April

Taken. The only midday Tṛtīyā reaches.

madhyāhna begins 11:55  12:43 madhyāhna ends
11:0711:3111:5512:1912:4313:0713:31

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 19:54 on Fri 12 Apr to 21:48 on Sat 13 Apr.

    2013-04-12T11:53:53Z → 2013-04-13T13:47:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 12th, 11:55–12:43 on the 13th.

    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 12th and 48 of 48 on the 13th.

    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 25836 s

  5. 05

    Ruling

    Gaurī Tṛtīyā, Baoding, 2013: Saturday 13 April.

    confidence: determinate

Say it like this

In Baoding, Gaurī Tṛtīyā (Gangaur) 2013 falls on Saturday 13 April. Tṛtīyā runs from 19:54 on Fri 12 Apr to 21:48 on Sat 13 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2013/gauri-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 13 Apr
Ahargaṇa, classicalDisc centre, no refractionSat 13 Apr
compat-drikpanchangComparison profileSat 13 Apr
No institution has a recorded ruling for Baoding.

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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles04:54 → 06:4812:3048 min12:300 min12 Apr
Chicago06:54 → 08:4812:2848 min12:270 min12 Apr
Jersey City07:54 → 09:4812:3348 min12:330 min12 Apr
Port of Spain07:54 → 09:4811:4348 min11:430 min12 Apr
London12:54 → 14:4812:3832 min12:3848 min13 Apr
Durban13:54 → 15:4811:320 min11:3248 min13 Apr
Dubai15:54 → 17:4811:560 min11:5548 min13 Apr
Delhi17:24 → 19:1811:580 min11:5848 min13 Apr
Kolkata17:24 → 19:1811:130 min11:1348 min13 Apr
Singapore19:54 → 21:4812:410 min12:4148 min13 Apr
Sydney21:54 → 23:4811:320 min11:3248 min13 Apr
Suva23:54 → 01:4811:430 min11:4348 min13 Apr
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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