Ruling · Naraka Caturdaśī (Choti Diwali) · 2038

Wednesday 27 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 544 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 26 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:53 aruṇodaya beginssunrise 06:39
04:2904:5305:1705:4106:0506:2906:53

0 of 106 minutes covered

Dawn of Wednesday 27 October

Taken. The only dawn Caturdaśī reaches.

04:54 aruṇodaya beginssunrise 06:40
04:3004:5405:1805:4206:0606:3006:54

106 of 106 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 19:21 on Tue 26 Oct to 15:43 on Wed 27 Oct.

    2038-10-26T11:21:19Z → 2038-10-27T07:43:26Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:53–06:39 on the 26th, 04:54–06:40 on the 27th.

    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 106 minutes on the 26th and 106 of 106 on the 27th.

    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 32616 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2038: Wednesday 27 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2038 falls on Wednesday 27 October. Caturdaśī runs from 19:21 on Tue 26 Oct to 15:43 on Wed 27 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2038/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 27 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 27 Oct
compat-drikpanchangComparison profileWed 27 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 26thCoveredAruṇodaya 27thCoveredRuled
Los Angeles04:21 → 00:4305:24104 min05:240 min26 Oct
Chicago06:21 → 02:4305:2955 min05:300 min26 Oct
Jersey City07:21 → 03:4305:340 min05:340 min26 Oct
Port of Spain07:21 → 03:4304:190 min04:190 min26 Oct
London12:21 → 08:4305:520 min05:53112 min27 Oct
Durban13:21 → 09:4303:400 min03:3987 min27 Oct
Dubai15:21 → 11:4304:420 min04:42101 min27 Oct
Delhi16:51 → 13:1304:470 min04:47103 min27 Oct
Kolkata16:51 → 13:1303:570 min03:58101 min27 Oct
Singapore19:21 → 15:4305:110 min05:1195 min27 Oct
Sydney22:21 → 18:4304:360 min04:3586 min27 Oct
Suva23:21 → 19:4304:000 min03:5991 min27 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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