Ruling · Naraka Caturdaśī (Choti Diwali) · 1907

Tuesday 5 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 95 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 4 November

Caturdaśī is absent from aruṇodaya. Not taken.

04:59 aruṇodaya beginssunrise 06:47
04:3504:5905:2305:4706:1106:3506:59

0 of 108 minutes covered

Dawn of Tuesday 5 November

Taken. The only dawn Caturdaśī reaches.

05:00 aruṇodaya beginssunrise 06:48
04:3605:0005:2405:4806:1206:3607:00

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 09:37 on Mon 4 Nov to 08:24 on Tue 5 Nov.

    1907-11-04T01:36:42Z → 1907-11-05T00:23:48Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:59–06:47 on the 4th, 05:00–06:48 on the 5th.

    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 108 minutes on the 4th and 108 of 108 on the 5th.

    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 5728 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1907: Tuesday 5 November.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1907 falls on Tuesday 5 November. Caturdaśī runs from 09:37 on Mon 4 Nov to 08:24 on Tue 5 Nov and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1907/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 5 Nov
Ahargaṇa, classicalDisc centre, no refractionTue 5 Nov
compat-drikpanchangComparison profileTue 5 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 4thCoveredAruṇodaya 5thCoveredRuled
Los Angeles17:37 → 16:2404:29106 min04:290 min4 Nov
Chicago19:37 → 18:2404:36110 min04:370 min4 Nov
Jersey City20:37 → 19:2404:40109 min04:410 min4 Nov
Port of Spain21:37 → 20:2404:2098 min04:200 min4 Nov
London01:37 → 00:2405:02115 min05:040 min4 Nov
Durban03:37 → 02:2403:3584 min03:340 min4 Nov
Dubai05:18 → 04:0504:2651 min04:260 min4 Nov
Delhi07:07 → 05:5404:510 min04:5163 min5 Nov
Kolkata07:07 → 05:5404:000 min04:01102 min5 Nov
Singapore08:37 → 07:2404:110 min04:1196 min5 Nov
Sydney11:37 → 10:2403:300 min03:2984 min5 Nov
Suva13:32 → 12:1903:520 min03:5190 min5 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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