Ruling · Naraka Caturdaśī (Choti Diwali) · 1936

Friday 13 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 37 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 Thursday 12 November

Caturdaśī is absent from aruṇodaya. Not taken.

05:07 aruṇodaya beginssunrise 06:57
04:4305:0705:3105:5506:1906:4307:0707:31

0 of 111 minutes covered

Dawn of Friday 13 November

Taken. The only dawn Caturdaśī reaches.

05:07 aruṇodaya beginssunrise 06:58
04:4305:0705:3105:5506:1906:4307:0707:31

111 of 111 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 07:34 on Thu 12 Nov to 10:09 on Fri 13 Nov.

    1936-11-11T23:33:38Z → 1936-11-13T02:09:13Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:07–06:57 on the 12th, 05:07–06:58 on the 13th.

    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 111 minutes on the 12th and 111 of 111 on the 13th.

    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 2190 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1936: Friday 13 November.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1936 falls on Friday 13 November. Caturdaśī runs from 07:34 on Thu 12 Nov to 10:09 on Fri 13 Nov and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1936/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 13 Nov
compat-drikpanchangComparison profileFri 13 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 11thCoveredAruṇodaya 13thCoveredRuled
Los Angeles15:34 → 18:0904:340 min04:360 min12 Nov
Chicago18:34 → 21:0905:430 min05:450 min12 Nov
Jersey City18:34 → 21:0904:470 min04:490 min12 Nov
Port of Spain19:34 → 22:0904:220 min04:220 min12 Nov
London23:34 → 02:0905:130 min05:150 min12 Nov
Durban01:34 → 04:0903:310 min03:3039 min12 Nov
Dubai03:34 → 06:0904:490 min04:5079 min12 Nov
Delhi05:04 → 07:3904:550 min04:56106 min12 Nov
Kolkata05:04 → 07:3904:040 min04:05103 min12 Nov
Singapore06:54 → 09:2904:310 min04:3296 min13 Nov
Sydney09:34 → 12:0903:250 min03:2482 min13 Nov
Suva11:34 → 14:0903:550 min03:5489 min13 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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