Ruling · Gaurī Tṛtīyā (Gangaur) · 2018

Tuesday 20 March

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 391 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 Monday 19 March

Tṛtīyā is absent from madhyāhna. Not taken.

madhyāhna begins 12:02  12:50 madhyāhna ends
11:1411:3812:0212:2612:5013:1413:38

0 of 48 minutes covered

Midday of Tuesday 20 March

Taken. The only midday Tṛtīyā reaches.

madhyāhna begins 12:02  12:50 madhyāhna ends
11:1411:3812:0212:2612:5013:1413:38

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 20:23 on Mon 19 Mar to 19:21 on Tue 20 Mar.

    2018-03-19T12:23:19Z → 2018-03-20T11:20:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:02–12:50 on the 19th, 12:02–12:50 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 23433 s

  5. 05

    Ruling

    Gaurī Tṛtīyā, Baoding, 2018: Tuesday 20 March.

    confidence: determinate

Say it like this

In Baoding, Gaurī Tṛtīyā (Gangaur) 2018 falls on Tuesday 20 March. Tṛtīyā runs from 20:23 on Mon 19 Mar to 19:21 on Tue 20 Mar and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2018/gauri-tritiya · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 20 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 20 Mar
compat-drikpanchangComparison profileTue 20 Mar
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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles05:23 → 04:2112:3748 min12:370 min19 Mar
Chicago07:23 → 06:2112:3548 min12:340 min19 Mar
Jersey City08:23 → 07:2112:4048 min12:400 min19 Mar
Port of Spain08:23 → 07:2111:5048 min11:500 min19 Mar
London12:23 → 11:2111:459 min11:440 min19 Mar
Durban14:23 → 13:2111:390 min11:3948 min20 Mar
Dubai16:23 → 15:2112:030 min12:0248 min20 Mar
Delhi17:53 → 16:5112:050 min12:0548 min20 Mar
Kolkata17:53 → 16:5111:210 min11:2048 min20 Mar
Singapore20:23 → 19:2112:480 min12:4848 min20 Mar
Sydney23:23 → 22:2112:390 min12:3848 min20 Mar
Suva00:23 → 23:2111:500 min11:5048 min20 Mar
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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