Ruling · Nāga Caturthī · 2013

Thursday 7 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 46 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 6 November

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
Caturthī begins 13:11:26
10:5011:1411:3812:0212:2612:5013:14

0 of 48 minutes covered

Midday of Thursday 7 November

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

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 13:11 on Wed 6 Nov to 10:25 on Thu 7 Nov.

    2013-11-06T05:11:27Z → 2013-11-07T02:24:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 6th, 11:38–12:26 on the 7th.

    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 6th and 0 of 48 on the 7th.

    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 2754 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 2013: Thursday 7 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 2013 falls on Thursday 7 November. Caturthī runs from 13:11 on Wed 6 Nov to 10:25 on Thu 7 Nov, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/2013/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 7 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 7 Nov
compat-drikpanchangComparison profileThu 7 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 6thCoveredMadhyāhna 7thCoveredRuled
Los Angeles21:11 → 18:2511:1248 min11:130 min6 Nov
Chicago23:11 → 20:2511:1048 min11:100 min6 Nov
Jersey City00:11 → 21:2511:1648 min11:160 min6 Nov
Port of Spain01:11 → 22:2511:2648 min11:260 min6 Nov
London05:11 → 02:2511:2048 min11:200 min6 Nov
Durban07:11 → 04:2511:1648 min11:160 min6 Nov
Dubai09:11 → 06:2511:3848 min11:380 min6 Nov
Delhi10:41 → 07:5511:4148 min11:410 min6 Nov
Kolkata10:41 → 07:5510:5648 min10:560 min6 Nov
Singapore13:11 → 10:2512:241 min12:240 min6 Nov
Sydney16:11 → 13:2512:150 min12:1548 min7 Nov
Suva18:11 → 15:2512:260 min12:2648 min7 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