Ruling · Gaurī Tṛtīyā (Gangaur) · 1902

Friday 11 April

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 1 min 59 s away. Say “contested”.

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 Thursday 10 April

Tṛtīyā is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Friday 11 April

Taken. The only midday Tṛtīyā reaches.

madhyāhna begins 11:56  12:44 madhyāhna ends
Tṛtīyā ends 12:41:52
11:0811:3211:5612:2012:4413:0813:32

46 of 48 minutes covered, the first 46

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

How it was decided

  1. 01

    Aṅga

    Tṛtīyā runs from 15:49 on Thu 10 Apr to 12:42 on Fri 11 Apr.

    1902-04-10T07:48:51Z → 1902-04-11T04:41:52Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 10th, 11:56–12:44 on the 11th.

    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 10th and 46 of 48 on the 11th.

    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 119 s < 300 s

  5. 05

    Ruling

    Gaurī Tṛtīyā, Baoding, 1902: Friday 11 April.

    confidence: boundary (margin)

Say it like this

In Baoding, Gaurī Tṛtīyā (Gangaur) 1902 falls on Friday 11 April. Tṛtīyā runs from 15:49 on Thu 10 Apr to 12:42 on Fri 11 Apr and covers 46 of 48 minutes of madhyāhna that midday. It is 1 min 59 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1902/gauri-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 11 Apr
Ahargaṇa, classicalDisc centre, no refractionFri 11 Apr
compat-drikpanchangComparison profileFri 11 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 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles23:49 → 20:4211:3148 min11:300 min10 Apr
Chicago01:49 → 22:4211:2848 min11:280 min10 Apr
Jersey City02:49 → 23:4211:3448 min11:340 min10 Apr
Port of Spain03:49 → 00:4211:4448 min11:430 min10 Apr
London07:49 → 04:4211:3948 min11:380 min10 Apr
Durban09:19 → 06:1211:0348 min11:030 min10 Apr
Dubai11:30 → 08:2311:3848 min11:370 min10 Apr
Delhi13:10 → 10:0311:500 min11:500 min11 Apr
Kolkata13:10 → 10:0311:050 min11:050 min11 Apr
Singapore14:44 → 11:3711:370 min11:370 min11 Apr
Sydney17:49 → 14:4211:330 min11:3248 min11 Apr
Suva19:44 → 16:3711:390 min11:3948 min11 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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