Ruling · Naraka Caturdaśī (Choti Diwali) · 1933

Wednesday 18 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 560 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 17 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:46 aruṇodaya beginssunrise 06:29
04:2204:4605:1005:3405:5806:2206:46

0 of 103 minutes covered

Dawn of Wednesday 18 October

Taken. The only dawn Caturdaśī reaches.

04:47 aruṇodaya beginssunrise 06:30
04:2304:4705:1105:3505:5906:2306:47

103 of 103 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 17:20 on Tue 17 Oct to 15:50 on Wed 18 Oct.

    1933-10-17T09:20:21Z → 1933-10-18T07:49:52Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:46–06:29 on the 17th, 04:47–06:30 on the 18th.

    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 103 minutes on the 17th and 103 of 103 on the 18th.

    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 33596 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1933: Wednesday 18 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1933 falls on Wednesday 18 October. Caturdaśī runs from 17:20 on Tue 17 Oct to 15:50 on Wed 18 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1933/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 18 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 18 Oct
compat-drikpanchangComparison profileWed 18 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 17thCoveredAruṇodaya 18thCoveredRuled
Los Angeles01:20 → 23:5004:18102 min04:190 min17 Oct
Chicago03:20 → 01:5004:21104 min04:220 min17 Oct
Jersey City04:20 → 02:5004:26103 min04:270 min17 Oct
Port of Spain05:20 → 03:5004:1835 min04:180 min17 Oct
London09:20 → 07:5004:400 min04:42107 min18 Oct
Durban11:20 → 09:5003:470 min03:4689 min18 Oct
Dubai13:20 → 11:5004:380 min04:39100 min18 Oct
Delhi14:50 → 13:2004:430 min04:43100 min18 Oct
Kolkata14:50 → 13:2003:550 min03:5599 min18 Oct
Singapore16:40 → 15:1004:320 min04:3295 min18 Oct
Sydney19:20 → 17:5003:440 min03:4388 min18 Oct
Suva21:20 → 19:5004:050 min04:0492 min18 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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