Ruling · Nāga Caturthī · 1921

Thursday 3 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 361 minutes.

Decide it for

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 Thursday 3 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

Midday of Friday 4 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

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 05:10 on Thu 3 Nov to 05:36 on Fri 4 Nov.

    1921-11-02T21:09:55Z → 1921-11-03T21:36:19Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 3rd, 11:38–12:26 on the 4th.

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

  3. 03

    Rule

    Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.

    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 21676 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1921: Thursday 3 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1921 falls on Thursday 3 November. Caturthī runs from 05:10 on Thu 3 Nov to 05:36 on Fri 4 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1921/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 3 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 3 Nov
compat-drikpanchangComparison profileThu 3 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 2ndCoveredMadhyāhna 3rdCoveredRuled
Los Angeles13:10 → 13:3611:120 min11:1248 min3 Nov
Chicago15:10 → 15:3611:100 min11:1048 min3 Nov
Jersey City16:10 → 16:3611:160 min11:1648 min3 Nov
Port of Spain17:10 → 17:3611:260 min11:2648 min3 Nov
London21:10 → 21:3611:200 min11:2048 min3 Nov
Durban23:10 → 23:3611:160 min11:1648 min3 Nov
Dubai01:10 → 01:3611:380 min11:3848 min3 Nov
Delhi02:40 → 03:0611:410 min11:4148 min3 Nov
Kolkata02:40 → 03:0610:560 min10:5648 min3 Nov
Singapore04:10 → 04:3611:240 min11:2448 min3 Nov
Sydney07:10 → 07:3611:150 min11:1548 min3 Nov
Suva09:10 → 09:3611:260 min11:2648 min3 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

About Ahargaṇa