Ruling · Nāga Caturthī · 1913

Sunday 2 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 42 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 1 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 2 November

Taken. The only midday Caturthī reaches.

madhyāhna begins 11:38  12:26 madhyāhna ends
Caturthī ends 13:07:55
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 14:34 on Sat 1 Nov to 13:08 on Sun 2 Nov.

    1913-11-01T06:34:21Z → 1913-11-02T05:07:55Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 1st, 11:38–12:26 on the 2nd.

    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 1st and 48 of 48 on the 2nd.

    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 2541 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1913: Sunday 2 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1913 falls on Sunday 2 November. Caturthī runs from 14:34 on Sat 1 Nov to 13:08 on Sun 2 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1913/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 2 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 2 Nov
compat-drikpanchangComparison profileSun 2 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 1stCoveredMadhyāhna 2ndCoveredRuled
Los Angeles22:34 → 21:0811:1248 min11:120 min1 Nov
Chicago00:34 → 23:0811:1048 min11:100 min1 Nov
Jersey City01:34 → 00:0811:1648 min11:160 min1 Nov
Port of Spain02:34 → 01:0811:2648 min11:260 min1 Nov
London06:34 → 05:0811:2048 min11:200 min1 Nov
Durban08:34 → 07:0811:1648 min11:160 min1 Nov
Dubai10:15 → 08:4911:1948 min11:190 min1 Nov
Delhi12:04 → 10:3811:4124 min11:410 min1 Nov
Kolkata12:04 → 10:3810:560 min10:560 min2 Nov
Singapore13:34 → 12:0811:240 min11:2444 min2 Nov
Sydney16:34 → 15:0811:150 min11:1548 min2 Nov
Suva18:29 → 17:0311:210 min11:2148 min2 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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