Ruling · Naraka Caturdaśī (Choti Diwali) · 1951

Monday 29 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 222 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 29 October

Taken. The only dawn Caturdaśī reaches.

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

106 of 106 minutes covered

Dawn of Tuesday 30 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:55 aruṇodaya beginssunrise 06:42
04:3104:5505:1905:4306:0706:3106:55

0 of 107 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 01:13 on Mon 29 Oct to 23:51 on Mon 29 Oct.

    1951-10-28T17:12:49Z → 1951-10-29T15:51:21Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:55–06:41 on the 29th, 04:55–06:42 on the 30th.

    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 29th and 0 of 107 on the 30th.

    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 13314 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1951: Monday 29 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1951 falls on Monday 29 October. Caturdaśī runs from 01:13 on Mon 29 Oct to 23:51 on Mon 29 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1951/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 29 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 29 Oct
compat-drikpanchangComparison profileMon 29 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 28thCoveredAruṇodaya 29thCoveredRuled
Los Angeles09:13 → 07:5104:240 min04:25105 min29 Oct
Chicago11:13 → 09:5104:300 min04:31108 min29 Oct
Jersey City12:13 → 10:5104:350 min04:35107 min29 Oct
Port of Spain13:13 → 11:5104:190 min04:1998 min29 Oct
London17:13 → 15:5104:540 min04:55113 min29 Oct
Durban19:13 → 17:5103:390 min03:3887 min29 Oct
Dubai21:13 → 19:5104:420 min04:42102 min29 Oct
Delhi22:43 → 21:2104:470 min04:48103 min29 Oct
Kolkata22:43 → 21:2103:580 min03:58101 min29 Oct
Singapore00:43 → 23:2104:410 min04:4195 min29 Oct
Sydney03:13 → 01:5103:350 min03:3485 min29 Oct
Suva05:13 → 03:5103:590 min03:5917 min29 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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