Ruling · Naraka Caturdaśī (Choti Diwali) · 2008

Monday 27 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 21 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 27 October

Taken. Both dawns qualify; the rule takes the first.

04:54 aruṇodaya beginssunrise 06:40
Caturdaśī begins 05:15:23
04:3004:5405:1805:4206:0606:3006:54

85 of 106 minutes covered, the last 85

Dawn of Tuesday 28 October

Qualifies with 68 of 106 minutes. Not taken.

04:55 aruṇodaya beginssunrise 06:41
Caturdaśī ends 06:02:55
04:3104:5505:1905:4306:0706:3106:55

68 of 106 minutes covered, the first 68

Caturdaśī presentAruṇodaya, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 05:15 on Mon 27 Oct to 06:03 on Tue 28 Oct.

    2008-10-26T21:15:23Z → 2008-10-27T22:02:56Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:54–06:40 on the 27th, 04:55–06:41 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 85 of 106 minutes on the 27th and 68 of 106 on the 28th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both dawns qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 1280 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2008: Monday 27 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2008 falls on Monday 27 October. Caturdaśī runs from 05:15 on Mon 27 Oct to 06:03 on Tue 28 Oct and covers 85 of 106 minutes of aruṇodaya that dawn. It also reaches the next dawn for 68 minutes; by the rule the first dawn is taken.

ahargana.org/baoding/festivals/2008/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 27 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 27 Oct
compat-drikpanchangComparison profileMon 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 Angeles14:15 → 15:0305:240 min05:24104 min27 Oct
Chicago16:15 → 17:0305:290 min05:30107 min27 Oct
Jersey City17:15 → 18:0305:340 min05:35107 min27 Oct
Port of Spain17:15 → 18:0304:190 min04:1998 min27 Oct
London21:15 → 22:0304:530 min04:54112 min27 Oct
Durban23:15 → 00:0303:400 min03:3987 min27 Oct
Dubai01:15 → 02:0304:420 min04:42102 min27 Oct
Delhi02:45 → 03:3304:470 min04:47103 min27 Oct
Kolkata02:45 → 03:3303:580 min03:58101 min27 Oct
Singapore05:15 → 06:0305:110 min05:1191 min27 Oct
Sydney08:15 → 09:0304:350 min04:350 min28 Oct
Suva09:15 → 10:0304:000 min03:590 min28 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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