Ruling · Gaurī Tṛtīyā (Gangaur) · 1987

Wednesday 1 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 405 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 Tuesday 31 March

Tṛtīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

0 of 48 minutes covered

Midday of Wednesday 1 April

Taken. The only midday Tṛtīyā reaches.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

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 19:32 on Tue 31 Mar to 19:50 on Wed 1 Apr.

    1987-03-31T11:32:05Z → 1987-04-01T11:49:40Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 31st, 11:59–12:47 on the 1st.

    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 31st and 48 of 48 on the 1st.

    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 24310 s

  5. 05

    Ruling

    Gaurī Tṛtīyā, Baoding, 1987: Wednesday 1 April.

    confidence: determinate

Say it like this

In Baoding, Gaurī Tṛtīyā (Gangaur) 1987 falls on Wednesday 1 April. Tṛtīyā runs from 19:32 on Tue 31 Mar to 19:50 on Wed 1 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1987/gauri-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 1 Apr
Ahargaṇa, classicalDisc centre, no refractionWed 1 Apr
compat-drikpanchangComparison profileWed 1 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 31stCoveredMadhyāhna 1stCoveredRuled
Los Angeles03:32 → 03:5011:3348 min11:330 min31 Mar
Chicago05:32 → 05:5011:3148 min11:310 min31 Mar
Jersey City06:32 → 06:5011:3748 min11:370 min31 Mar
Port of Spain07:32 → 07:5011:4648 min11:460 min31 Mar
London12:32 → 12:5012:4148 min12:419 min31 Mar
Durban13:32 → 13:5011:360 min11:3648 min1 Apr
Dubai15:32 → 15:5011:590 min11:5948 min1 Apr
Delhi17:02 → 17:2012:020 min12:0148 min1 Apr
Kolkata17:02 → 17:2011:170 min11:1748 min1 Apr
Singapore19:32 → 19:5012:450 min12:4548 min1 Apr
Sydney21:32 → 21:5011:350 min11:3548 min1 Apr
Suva23:32 → 23:5011:470 min11:4648 min1 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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