Ruling · Naraka Caturdaśī (Choti Diwali) · 2011

Wednesday 26 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 68 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 25 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:52 aruṇodaya beginssunrise 06:37
04:2804:5205:1605:4006:0406:2806:52

0 of 105 minutes covered

Dawn of Wednesday 26 October

Taken. The only dawn Caturdaśī reaches.

04:53 aruṇodaya beginssunrise 06:38
04:2904:5305:1705:4106:0506:2906:53

106 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 11:32 on Tue 25 Oct to 07:46 on Wed 26 Oct.

    2011-10-25T03:32:08Z → 2011-10-25T23:46:23Z

  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 0 of 105 minutes on the 25th and 106 of 106 on the 26th.

    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 4086 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2011: Wednesday 26 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2011 falls on Wednesday 26 October. Caturdaśī runs from 11:32 on Tue 25 Oct to 07:46 on Wed 26 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2011/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 26 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 26 Oct
compat-drikpanchangComparison profileWed 26 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 25thCoveredAruṇodaya 26thCoveredRuled
Los Angeles20:32 → 16:4605:23104 min05:230 min25 Oct
Chicago22:32 → 18:4605:28107 min05:290 min25 Oct
Jersey City23:32 → 19:4605:32106 min05:330 min25 Oct
Port of Spain23:32 → 19:4604:1998 min04:190 min25 Oct
London04:32 → 00:4605:50111 min05:520 min25 Oct
Durban05:32 → 01:4603:410 min03:400 min25 Oct
Dubai07:32 → 03:4604:410 min04:410 min25 Oct
Delhi09:02 → 05:1604:460 min04:4730 min26 Oct
Kolkata09:02 → 05:1603:570 min03:5779 min26 Oct
Singapore11:32 → 07:4605:110 min05:1195 min26 Oct
Sydney14:32 → 10:4604:370 min04:3686 min26 Oct
Suva16:32 → 12:4605:000 min05:0091 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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