Ruling · Nāga Caturthī · 2086

Sunday 10 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 565 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 Sunday 10 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 Monday 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

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 01:16 on Sun 10 Nov to 02:14 on Mon 11 Nov.

    2086-11-09T17:15:58Z → 2086-11-10T18:13:39Z

  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 48 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

    Only one midday qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 33872 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 2086: Sunday 10 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 2086 falls on Sunday 10 November. Caturthī runs from 01:16 on Sun 10 Nov to 02:14 on Mon 11 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2086/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 10 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 10 Nov
compat-drikpanchangComparison profileSun 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles09:16 → 10:1411:1348 min11:130 min9 Nov
Chicago11:16 → 12:1411:1042 min11:1148 min10 Nov
Jersey City12:16 → 13:1411:160 min11:1648 min10 Nov
Port of Spain13:16 → 14:1411:260 min11:2648 min10 Nov
London17:16 → 18:1411:200 min11:2048 min10 Nov
Durban19:16 → 20:1411:160 min11:1648 min10 Nov
Dubai21:16 → 22:1411:390 min11:3948 min10 Nov
Delhi22:46 → 23:4411:410 min11:4148 min10 Nov
Kolkata22:46 → 23:4410:560 min10:5748 min10 Nov
Singapore01:16 → 02:1412:250 min12:2548 min10 Nov
Sydney04:16 → 05:1412:150 min12:1648 min10 Nov
Suva05:16 → 06:1411:260 min11:2748 min10 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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