Ruling · Nāga Caturthī · 1937

Sunday 7 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 438 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 Saturday 6 November

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

0 of 48 minutes covered

Midday of Sunday 7 November

Taken. The only midday Caturthī reaches.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 19:44 on Sat 6 Nov to 22:29 on Sun 7 Nov.

    1937-11-06T11:44:01Z → 1937-11-07T14:28:40Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 6th, 11:38–12:26 on the 7th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 26305 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1937: Sunday 7 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1937 falls on Sunday 7 November. Caturthī runs from 19:44 on Sat 6 Nov to 22:29 on Sun 7 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1937/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 7 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 7 Nov
compat-drikpanchangComparison profileSun 7 Nov
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/naga-chaturthi · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Caturthī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 4 Naga caturthi (paraviddha and madhyahnavyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturthīMadhyāhna 6thCoveredMadhyāhna 7thCoveredRuled
Los Angeles03:44 → 06:2911:1248 min11:130 min6 Nov
Chicago05:44 → 08:2911:1048 min11:100 min6 Nov
Jersey City06:44 → 09:2911:1648 min11:160 min6 Nov
Port of Spain07:44 → 10:2911:2648 min11:260 min6 Nov
London11:44 → 14:2911:2024 min11:2048 min7 Nov
Durban13:44 → 16:2911:160 min11:1648 min7 Nov
Dubai15:44 → 18:2911:380 min11:3848 min7 Nov
Delhi17:14 → 19:5911:410 min11:4148 min7 Nov
Kolkata17:14 → 19:5910:560 min10:5648 min7 Nov
Singapore19:04 → 21:4911:440 min11:4448 min7 Nov
Sydney21:44 → 00:2911:150 min11:1548 min7 Nov
Suva23:44 → 02:2911:260 min11:2648 min7 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
naga-chaturthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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