Ruling · Naraka Caturdaśī (Choti Diwali) · 1950

Thursday 9 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 252 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 Wednesday 8 November

Caturdaśī is absent from aruṇodaya. Not taken.

05:03 aruṇodaya beginssunrise 06:52
04:3905:0305:2705:5106:1506:3907:03

0 of 109 minutes covered

Dawn of Thursday 9 November

Taken. The only dawn Caturdaśī reaches.

05:04 aruṇodaya beginssunrise 06:53
04:4005:0405:2805:5206:1606:4007:04

110 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 14:26 on Wed 8 Nov to 11:06 on Thu 9 Nov.

    1950-11-08T06:25:49Z → 1950-11-09T03:05:34Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:03–06:52 on the 8th, 05:04–06:53 on the 9th.

    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 109 minutes on the 8th and 110 of 110 on the 9th.

    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 15133 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1950: Thursday 9 November.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1950 falls on Thursday 9 November. Caturdaśī runs from 14:26 on Wed 8 Nov to 11:06 on Thu 9 Nov and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1950/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 9 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 9 Nov
compat-drikpanchangComparison profileThu 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 Angeles22:26 → 19:0604:32107 min04:320 min8 Nov
Chicago00:26 → 21:0604:40111 min04:410 min8 Nov
Jersey City01:26 → 22:0604:44110 min04:450 min8 Nov
Port of Spain02:26 → 23:0604:2199 min04:210 min8 Nov
London06:26 → 03:0605:0840 min05:090 min8 Nov
Durban08:26 → 05:0603:320 min03:3284 min9 Nov
Dubai10:26 → 07:0604:470 min04:48104 min9 Nov
Delhi11:56 → 08:3604:530 min04:54105 min9 Nov
Kolkata11:56 → 08:3604:020 min04:03103 min9 Nov
Singapore13:56 → 10:3604:410 min04:4196 min9 Nov
Sydney16:26 → 13:0603:270 min03:2683 min9 Nov
Suva18:26 → 15:0603:550 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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