Ruling · Nāga Caturthī · 2037

Wednesday 11 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 9 min 12 s.

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 Tuesday 10 November

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
Caturthī begins 12:36:28
10:5011:1411:3812:0212:2612:5013:14

0 of 48 minutes covered

Midday of Wednesday 11 November

Taken. Caturthī reaches neither midday; the rule takes the second day.

madhyāhna begins 11:38  12:26 madhyāhna ends
Caturthī ends 11:28:46
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 12:36 on Tue 10 Nov to 11:29 on Wed 11 Nov.

    2037-11-10T04:36:28Z → 2037-11-11T03:28:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 10th, 11:38–12:26 on the 11th.

    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 10th and 0 of 48 on the 11th.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: paraviddha → second-day · margin 552 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 2037: Wednesday 11 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 2037 falls on Wednesday 11 November. Caturthī runs from 12:36 on Tue 10 Nov to 11:29 on Wed 11 Nov, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/2037/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 11 Nov
Ahargaṇa, classicalDisc centre, no refractionWed 11 Nov
compat-drikpanchangComparison profileWed 11 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 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles20:36 → 19:2911:1348 min11:130 min10 Nov
Chicago22:36 → 21:2911:1048 min11:100 min10 Nov
Jersey City23:36 → 22:2911:1648 min11:160 min10 Nov
Port of Spain00:36 → 23:2911:2648 min11:260 min10 Nov
London04:36 → 03:2911:2048 min11:200 min10 Nov
Durban06:36 → 05:2911:1648 min11:160 min10 Nov
Dubai08:36 → 07:2911:3948 min11:390 min10 Nov
Delhi10:06 → 08:5911:4148 min11:410 min10 Nov
Kolkata10:06 → 08:5910:5648 min10:560 min10 Nov
Singapore12:36 → 11:2912:2536 min12:250 min10 Nov
Sydney15:36 → 14:2912:150 min12:1548 min11 Nov
Suva16:36 → 15:2911:260 min11:2648 min11 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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