Ruling · Naraka Caturdaśī (Choti Diwali) · 1927

Monday 24 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 468 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 24 October

Taken. The only dawn Caturdaśī reaches.

04:51 aruṇodaya beginssunrise 06:36
04:2704:5105:1505:3906:0306:2706:51

105 of 105 minutes covered

Dawn of Tuesday 25 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:52 aruṇodaya beginssunrise 06:37
04:2804:5205:1605:4006:0406:2806:52

0 of 105 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 18:35 on Sun 23 Oct to 21:04 on Mon 24 Oct.

    1927-10-23T10:34:53Z → 1927-10-24T13:03:55Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:51–06:36 on the 24th, 04:52–06:37 on the 25th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 105 of 105 minutes on the 24th and 0 of 105 on the 25th.

    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 28061 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1927: Monday 24 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1927 falls on Monday 24 October. Caturdaśī runs from 18:35 on Sun 23 Oct to 21:04 on Mon 24 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1927/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 24 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 24 Oct
compat-drikpanchangComparison profileMon 24 Oct
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 23rdCoveredAruṇodaya 24thCoveredRuled
Los Angeles02:35 → 05:0404:21103 min04:2242 min23 Oct
Chicago04:35 → 07:0404:2697 min04:27106 min23 Oct
Jersey City05:35 → 08:0404:3041 min04:31106 min23 Oct
Port of Spain06:35 → 09:0404:180 min04:1997 min24 Oct
London10:35 → 13:0404:470 min04:48110 min24 Oct
Durban12:35 → 15:0403:430 min03:4288 min24 Oct
Dubai14:35 → 17:0404:400 min04:40101 min24 Oct
Delhi16:05 → 18:3404:450 min04:45102 min24 Oct
Kolkata16:05 → 18:3403:560 min03:57100 min24 Oct
Singapore17:35 → 20:0404:120 min04:1195 min24 Oct
Sydney20:35 → 23:0403:390 min03:3887 min24 Oct
Suva22:35 → 01:0404:020 min04:0191 min24 Oct
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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