Ruling · Naraka Caturdaśī (Choti Diwali) · 2000

Thursday 26 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 606 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

Caturdaśī is absent from aruṇodaya. Not taken.

04:52 aruṇodaya beginssunrise 06:38
04:2804:5205:1605:4006:0406:2806:52

0 of 105 minutes covered

Dawn of Thursday 26 October

Taken. The only dawn Caturdaśī reaches.

04:53 aruṇodaya beginssunrise 06:39
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 17:56 on Wed 25 Oct to 16:45 on Thu 26 Oct.

    2000-10-25T09:56:23Z → 2000-10-26T08:44:38Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:52–06:38 on the 25th, 04:53–06:39 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 36340 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2000: Thursday 26 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2000 falls on Thursday 26 October. Caturdaśī runs from 17:56 on Wed 25 Oct to 16:45 on Thu 26 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2000/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 26 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 26 Oct
compat-drikpanchangComparison profileThu 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 Angeles02:56 → 01:4505:23104 min05:240 min25 Oct
Chicago04:56 → 03:4505:29107 min05:290 min25 Oct
Jersey City05:56 → 04:4505:3383 min05:340 min25 Oct
Port of Spain05:56 → 04:4504:190 min04:1926 min26 Oct
London10:56 → 09:4505:510 min05:52112 min26 Oct
Durban11:56 → 10:4503:400 min03:4087 min26 Oct
Dubai13:56 → 12:4504:410 min04:42101 min26 Oct
Delhi15:26 → 14:1504:460 min04:47102 min26 Oct
Kolkata15:26 → 14:1503:570 min03:57101 min26 Oct
Singapore17:56 → 16:4505:110 min05:1195 min26 Oct
Sydney20:56 → 19:4504:360 min04:3586 min26 Oct
Suva21:56 → 20:4504:000 min04:0091 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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