Ruling · Nāga Caturthī · 1969

Thursday 13 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 447 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 Wednesday 12 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 Thursday 13 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 22:37 on Wed 12 Nov to 19:53 on Thu 13 Nov.

    1969-11-12T14:37:26Z → 1969-11-13T11:52:57Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 12th, 11:38–12:26 on the 13th.

    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 12th and 48 of 48 on the 13th.

    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 26803 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1969: Thursday 13 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1969 falls on Thursday 13 November. Caturthī runs from 22:37 on Wed 12 Nov to 19:53 on Thu 13 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1969/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 13 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 13 Nov
compat-drikpanchangComparison profileThu 13 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles06:37 → 03:5311:1348 min11:130 min12 Nov
Chicago08:37 → 05:5311:1148 min11:110 min12 Nov
Jersey City09:37 → 06:5311:1648 min11:160 min12 Nov
Port of Spain10:37 → 07:5311:2648 min11:260 min12 Nov
London15:37 → 12:5312:200 min12:2132 min13 Nov
Durban16:37 → 13:5311:160 min11:1648 min13 Nov
Dubai18:37 → 15:5311:390 min11:3948 min13 Nov
Delhi20:07 → 17:2311:410 min11:4148 min13 Nov
Kolkata20:07 → 17:2310:570 min10:5748 min13 Nov
Singapore22:07 → 19:2311:550 min11:5548 min13 Nov
Sydney00:37 → 21:5311:160 min11:1648 min13 Nov
Suva02:37 → 23:5311:270 min11:2748 min13 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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