Ruling · Naraka Caturdaśī (Choti Diwali) · 1937

Tuesday 2 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 133 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two dawns

One ghaṭī is 24 minutes. Aruṇodaya is 2 muhūrtas before sunrise.

Dawn of Monday 1 November

Caturdaśī is absent from aruṇodaya. Not taken.

04:57 aruṇodaya beginssunrise 06:45
04:3304:5705:2105:4506:0906:3306:57

0 of 107 minutes covered

Dawn of Tuesday 2 November

Taken. The only dawn Caturdaśī reaches.

04:58 aruṇodaya beginssunrise 06:46
04:3404:5805:2205:4606:1006:3406:58

108 of 108 minutes covered

Caturdaśī presentAruṇodaya, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 08:58 on Mon 1 Nov to 10:24 on Tue 2 Nov.

    1937-11-01T00:57:38Z → 1937-11-02T02:24:11Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:57–06:45 on the 1st, 04:58–06:46 on the 2nd.

    arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 0 of 107 minutes on the 1st and 108 of 108 on the 2nd.

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

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 7975 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1937: Tuesday 2 November.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1937 falls on Tuesday 2 November. Caturdaśī runs from 08:58 on Mon 1 Nov to 10:24 on Tue 2 Nov and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1937/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 2 Nov
Ahargaṇa, classicalDisc centre, no refractionTue 2 Nov
compat-drikpanchangComparison profileTue 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/naraka-chaturdashi · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Kṛṣṇa · Caturdaśī
Kāla
Aruṇodaya
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturdaśīAruṇodaya 1stCoveredAruṇodaya 2ndCoveredRuled
Los Angeles16:58 → 18:2404:27106 min04:280 min1 Nov
Chicago18:58 → 20:2404:34109 min04:350 min1 Nov
Jersey City19:58 → 21:2404:38108 min04:390 min1 Nov
Port of Spain20:58 → 22:2404:1998 min04:200 min1 Nov
London00:58 → 02:2404:59114 min05:010 min1 Nov
Durban02:58 → 04:2403:3686 min03:3649 min1 Nov
Dubai04:58 → 06:2404:4489 min04:44100 min1 Nov
Delhi06:28 → 07:5404:495 min04:50104 min1 Nov
Kolkata06:28 → 07:5403:590 min04:00102 min2 Nov
Singapore08:18 → 09:4404:310 min04:3195 min2 Nov
Sydney10:58 → 12:2403:310 min03:3184 min2 Nov
Suva12:58 → 14:2403:580 min03:5790 min2 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
naraka-chaturdashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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