Ruling · Gaurī Tṛtīyā (Gangaur) · 2029

Monday 16 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

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 Monday 16 April

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

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

48 of 48 minutes covered

Midday of Tuesday 17 April

Qualifies with 25 of 48 minutes. Not taken.

madhyāhna begins 11:54  12:42 madhyāhna ends
Tṛtīyā ends 12:19:16
11:0611:3011:5412:1812:4213:0613:30

25 of 48 minutes covered, the first 25

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

How it was decided

  1. 01

    Aṅga

    Tṛtīyā runs from 10:18 on Mon 16 Apr to 12:19 on Tue 17 Apr.

    2029-04-16T02:17:53Z → 2029-04-17T04:19:16Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 16th, 11:54–12:42 on the 17th.

    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 16th and 25 of 48 on the 17th.

    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 1367 s

  5. 05

    Ruling

    Gaurī Tṛtīyā, Baoding, 2029: Monday 16 April.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Gaurī Tṛtīyā (Gangaur) 2029 falls on Monday 16 April. Tṛtīyā runs from 10:18 on Mon 16 Apr to 12:19 on Tue 17 Apr and covers all of madhyāhna that midday. It also reaches the next midday for 25 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/2029/gauri-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 16 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 16 Apr
compat-drikpanchangComparison profileMon 16 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles19:18 → 21:1912:2948 min12:290 min16 Apr
Chicago21:18 → 23:1912:2748 min12:260 min16 Apr
Jersey City22:18 → 00:1912:3248 min12:320 min16 Apr
Port of Spain22:18 → 00:1911:4248 min11:420 min16 Apr
London03:18 → 05:1912:3748 min12:370 min16 Apr
Durban04:18 → 06:1911:3148 min11:310 min16 Apr
Dubai06:18 → 08:1911:5548 min11:540 min16 Apr
Delhi07:48 → 09:4911:5748 min11:570 min16 Apr
Kolkata07:48 → 09:4911:1248 min11:120 min16 Apr
Singapore10:18 → 12:1912:4048 min12:400 min16 Apr
Sydney12:18 → 14:1911:311 min11:3148 min17 Apr
Suva14:18 → 16:1911:420 min11:4248 min17 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