Ruling · Naraka Caturdaśī (Choti Diwali) · 1916

Wednesday 25 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 35 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 Wednesday 25 October

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

04:52 aruṇodaya beginssunrise 06:37
Caturdaśī begins 06:02:08
04:2804:5205:1605:4006:0406:2806:52

35 of 105 minutes covered, the last 35

Dawn of Thursday 26 October

Qualifies with 44 of 106 minutes. Not taken.

04:53 aruṇodaya beginssunrise 06:38
Caturdaśī ends 05:36:45
04:2904:5305:1705:4106:0506:2906:53

44 of 106 minutes covered, the first 44

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

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 06:02 on Wed 25 Oct to 05:37 on Thu 26 Oct.

    1916-10-24T22:02:09Z → 1916-10-25T21:36:45Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:52–06:37 on the 25th, 04:53–06:38 on the 26th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 35 of 105 minutes on the 25th and 44 of 106 on the 26th.

    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 2111 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1916: Wednesday 25 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1916 falls on Wednesday 25 October. Caturdaśī runs from 06:02 on Wed 25 Oct to 05:37 on Thu 26 Oct and covers 35 of 105 minutes of aruṇodaya that dawn. It also reaches the next dawn for 44 minutes; by the rule the first dawn is taken.

ahargana.org/baoding/festivals/1916/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 25 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 25 Oct
compat-drikpanchangComparison profileWed 25 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 24thCoveredAruṇodaya 25thCoveredRuled
Los Angeles14:02 → 13:3704:220 min04:23104 min25 Oct
Chicago16:02 → 15:3704:270 min04:28107 min25 Oct
Jersey City17:02 → 16:3704:320 min04:33106 min25 Oct
Port of Spain18:02 → 17:3704:190 min04:1998 min25 Oct
London22:02 → 21:3704:490 min04:50111 min25 Oct
Durban00:02 → 23:3703:420 min03:4188 min25 Oct
Dubai01:43 → 01:1804:220 min04:22101 min25 Oct
Delhi03:32 → 03:0704:460 min04:46102 min25 Oct
Kolkata03:32 → 03:0703:570 min03:57100 min25 Oct
Singapore05:02 → 04:3704:110 min04:1145 min25 Oct
Sydney08:02 → 07:3703:380 min03:370 min26 Oct
Suva10:02 → 09:3704:010 min04:010 min26 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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