Ruling · Naraka Caturdaśī (Choti Diwali) · 1913

Tuesday 28 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 15 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 28 October

Taken. The only dawn Caturdaśī reaches.

04:54 aruṇodaya beginssunrise 06:40
Caturdaśī begins 05:08:42
04:3004:5405:1805:4206:0606:3006:54

92 of 106 minutes covered, the last 92

Dawn of Wednesday 29 October

Caturdaśī is absent from aruṇodaya. Not taken.

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

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 05:09 on Tue 28 Oct to 01:47 on Wed 29 Oct.

    1913-10-27T21:08:43Z → 1913-10-28T17:46:51Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:54–06:40 on the 28th, 04:55–06:41 on the 29th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 92 of 106 minutes on the 28th and 0 of 106 on the 29th.

    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 873 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1913: Tuesday 28 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1913 falls on Tuesday 28 October. Caturdaśī runs from 05:09 on Tue 28 Oct to 01:47 on Wed 29 Oct and covers 92 of 106 minutes of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1913/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 28 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 28 Oct
compat-drikpanchangComparison profileTue 28 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 27thCoveredAruṇodaya 28thCoveredRuled
Los Angeles13:09 → 09:4704:240 min04:25104 min28 Oct
Chicago15:09 → 11:4704:300 min04:30107 min28 Oct
Jersey City16:09 → 12:4704:340 min04:35107 min28 Oct
Port of Spain17:09 → 13:4704:190 min04:1998 min28 Oct
London21:09 → 17:4704:530 min04:54112 min28 Oct
Durban23:09 → 19:4703:400 min03:3987 min28 Oct
Dubai00:50 → 21:2804:230 min04:23102 min28 Oct
Delhi02:39 → 23:1704:470 min04:47103 min28 Oct
Kolkata02:39 → 23:1703:580 min03:58101 min28 Oct
Singapore04:09 → 00:4704:110 min04:1195 min28 Oct
Sydney07:09 → 03:4703:350 min03:350 min29 Oct
Suva09:04 → 05:4203:550 min03:540 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

About Ahargaṇa