Ruling · Nāga Caturthī · 1961

Sunday 12 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 112 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 11 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 12 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 15:40 on Sat 11 Nov to 14:18 on Sun 12 Nov.

    1961-11-11T07:40:22Z → 1961-11-12T06:17:42Z

  2. 02

    Kāla

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

    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 11th and 48 of 48 on the 12th.

    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 6697 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1961: Sunday 12 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1961 falls on Sunday 12 November. Caturthī runs from 15:40 on Sat 11 Nov to 14:18 on Sun 12 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1961/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 12 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 12 Nov
compat-drikpanchangComparison profileSun 12 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles23:40 → 22:1811:1348 min11:130 min11 Nov
Chicago01:40 → 00:1811:1048 min11:110 min11 Nov
Jersey City02:40 → 01:1811:1648 min11:160 min11 Nov
Port of Spain03:40 → 02:1811:2648 min11:260 min11 Nov
London07:40 → 06:1811:2048 min11:200 min11 Nov
Durban09:40 → 08:1811:1648 min11:160 min11 Nov
Dubai11:40 → 10:1811:3946 min11:390 min11 Nov
Delhi13:10 → 11:4811:410 min11:417 min12 Nov
Kolkata13:10 → 11:4810:560 min10:5748 min12 Nov
Singapore15:10 → 13:4811:550 min11:5548 min12 Nov
Sydney17:40 → 16:1811:150 min11:1648 min12 Nov
Suva19:40 → 18:1811:260 min11:2748 min12 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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