Ruling · Gaurī Tṛtīyā (Gangaur) · 2030

Friday 5 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 Friday 5 April

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

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

48 of 48 minutes covered

Midday of Saturday 6 April

Qualifies with 29 of 48 minutes. Not taken.

madhyāhna begins 11:57  12:45 madhyāhna ends
Tṛtīyā ends 12:26:00
11:0911:3311:5712:2112:4513:0913:33

29 of 48 minutes covered, the first 29

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

How it was decided

  1. 01

    Aṅga

    Tṛtīyā runs from 09:58 on Fri 5 Apr to 12:26 on Sat 6 Apr.

    2030-04-05T01:57:55Z → 2030-04-06T04:26:01Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 5th, 11:57–12:45 on the 6th.

    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 5th and 29 of 48 on the 6th.

    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 1138 s

  5. 05

    Ruling

    Gaurī Tṛtīyā, Baoding, 2030: Friday 5 April.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Gaurī Tṛtīyā (Gangaur) 2030 falls on Friday 5 April. Tṛtīyā runs from 09:58 on Fri 5 Apr to 12:26 on Sat 6 Apr and covers all of madhyāhna that midday. It also reaches the next midday for 29 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/2030/gauri-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 5 Apr
Ahargaṇa, classicalDisc centre, no refractionFri 5 Apr
compat-drikpanchangComparison profileFri 5 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 5thCoveredMadhyāhna 6thCoveredRuled
Los Angeles18:58 → 21:2612:3248 min12:320 min5 Apr
Chicago20:58 → 23:2612:3048 min12:290 min5 Apr
Jersey City21:58 → 00:2612:3548 min12:350 min5 Apr
Port of Spain21:58 → 00:2611:4548 min11:450 min5 Apr
London02:58 → 05:2612:4048 min12:390 min5 Apr
Durban03:58 → 06:2611:3448 min11:340 min5 Apr
Dubai05:58 → 08:2611:5848 min11:570 min5 Apr
Delhi07:28 → 09:5612:0048 min12:000 min5 Apr
Kolkata07:28 → 09:5611:1548 min11:150 min5 Apr
Singapore09:58 → 12:2612:4348 min12:430 min5 Apr
Sydney12:58 → 15:2612:3424 min12:3348 min6 Apr
Suva13:58 → 16:2611:450 min11:4548 min6 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

About Ahargaṇa