Ruling · Naraka Caturdaśī (Choti Diwali) · 1905

Friday 27 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 380 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 Friday 27 October

Taken. The only dawn Caturdaśī reaches.

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

106 of 106 minutes covered

Dawn of Saturday 28 October

Caturdaśī is absent from aruṇodaya. Not taken.

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

0 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 22:33 on Thu 26 Oct to 18:51 on Fri 27 Oct.

    1905-10-26T14:32:54Z → 1905-10-27T10:51:07Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:53–06:39 on the 27th, 04:54–06:40 on the 28th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 106 of 106 minutes on the 27th and 0 of 106 on the 28th.

    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 22827 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1905: Friday 27 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1905 falls on Friday 27 October. Caturdaśī runs from 22:33 on Thu 26 Oct to 18:51 on Fri 27 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1905/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 27 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 27 Oct
compat-drikpanchangComparison profileFri 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 Angeles06:33 → 02:5104:230 min04:240 min26 Oct
Chicago08:33 → 04:5104:290 min04:3022 min27 Oct
Jersey City09:33 → 05:5104:330 min04:3477 min27 Oct
Port of Spain10:33 → 06:5104:190 min04:1998 min27 Oct
London14:33 → 10:5104:510 min04:53112 min27 Oct
Durban16:33 → 12:5103:400 min03:4087 min27 Oct
Dubai18:14 → 14:3204:220 min04:23101 min27 Oct
Delhi19:54 → 16:1204:370 min04:38102 min27 Oct
Kolkata19:54 → 16:1203:480 min03:49101 min27 Oct
Singapore21:33 → 17:5104:110 min04:1195 min27 Oct
Sydney00:33 → 20:5103:360 min03:3586 min27 Oct
Suva02:28 → 22:4603:550 min03:5591 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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