Ruling · Naraka Caturdaśī (Choti Diwali) · 1920

Tuesday 9 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 357 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 Tuesday 9 November

Taken. The only dawn Caturdaśī reaches.

05:04 aruṇodaya beginssunrise 06:54
04:4005:0405:2805:5206:1606:4007:04

110 of 110 minutes covered

Dawn of Wednesday 10 November

Caturdaśī is absent from aruṇodaya. Not taken.

05:05 aruṇodaya beginssunrise 06:55
04:4105:0505:2905:5306:1706:4107:05

0 of 110 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 22:39 on Mon 8 Nov to 23:08 on Tue 9 Nov.

    1920-11-08T14:38:32Z → 1920-11-09T15:08:08Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:04–06:54 on the 9th, 05:05–06:55 on the 10th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 110 of 110 minutes on the 9th and 0 of 110 on the 10th.

    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 21402 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1920: Tuesday 9 November.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1920 falls on Tuesday 9 November. Caturdaśī runs from 22:39 on Mon 8 Nov to 23:08 on Tue 9 Nov and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1920/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 9 Nov
Ahargaṇa, classicalDisc centre, no refractionTue 9 Nov
compat-drikpanchangComparison profileTue 9 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 8thCoveredAruṇodaya 9thCoveredRuled
Los Angeles06:39 → 07:0804:320 min04:33108 min9 Nov
Chicago08:39 → 09:0804:410 min04:41112 min9 Nov
Jersey City09:39 → 10:0804:440 min04:45111 min9 Nov
Port of Spain10:39 → 11:0804:210 min04:2199 min9 Nov
London14:39 → 15:0805:090 min05:10118 min9 Nov
Durban16:39 → 17:0803:320 min03:3284 min9 Nov
Dubai18:39 → 19:0804:470 min04:48104 min9 Nov
Delhi20:09 → 20:3804:530 min04:54105 min9 Nov
Kolkata20:09 → 20:3804:020 min04:03103 min9 Nov
Singapore21:39 → 22:0804:110 min04:1196 min9 Nov
Sydney00:39 → 01:0803:270 min03:2683 min9 Nov
Suva02:39 → 03:0803:550 min03:5589 min9 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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