Ruling · Gaurī Tṛtīyā (Gangaur) · 1967

Wednesday 12 April

Boundaryin Baoding, under the Rashtriya Panchang method. Both middays qualify and the rule does not say which to take. Say “contested”.

Decide it for

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 Wednesday 12 April

Taken. Both middays qualify; the rule is silent, and this one is covered longer.

madhyāhna begins 11:56  12:44 madhyāhna ends
Tṛtīyā begins 11:19:45
11:0811:3211:5612:2012:4413:0813:32

48 of 48 minutes covered

Midday of Thursday 13 April

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:55  12:43 madhyāhna ends
Tṛtīyā ends 13:28:19
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 11:20 on Wed 12 Apr to 13:28 on Thu 13 Apr.

    1967-04-12T03:19:45Z → 1967-04-13T05:28:19Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 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 48 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

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

    priority: unstated → greater-coverage · margin 2145 s

  5. 05

    Ruling

    Gaurī Tṛtīyā, Baoding, 1967: Wednesday 12 April.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Gaurī Tṛtīyā (Gangaur) 1967 falls on Wednesday 12 April. Tṛtīyā runs from 11:20 on Wed 12 Apr to 13:28 on Thu 13 Apr and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/baoding/festivals/1967/gauri-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 12 Apr
Ahargaṇa, classicalDisc centre, no refractionWed 12 Apr
compat-drikpanchangComparison profileThu 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 Angeles19:20 → 21:2811:3048 min11:300 min12 Apr
Chicago21:20 → 23:2811:2848 min11:280 min12 Apr
Jersey City22:20 → 00:2811:3448 min11:330 min12 Apr
Port of Spain23:20 → 01:2811:4348 min11:430 min12 Apr
London04:20 → 06:2812:3848 min12:380 min12 Apr
Durban05:20 → 07:2811:3348 min11:320 min12 Apr
Dubai07:20 → 09:2811:5648 min11:560 min12 Apr
Delhi08:50 → 10:5811:5848 min11:580 min12 Apr
Kolkata08:50 → 10:5811:1448 min11:130 min12 Apr
Singapore10:50 → 12:5812:1248 min12:1147 min12 Apr
Sydney13:20 → 15:2811:320 min11:3248 min13 Apr
Suva15:20 → 17:2811:430 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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