Ruling · Naraka Caturdaśī (Choti Diwali) · 1906

Wednesday 17 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 187 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 16 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:45 aruṇodaya beginssunrise 06:27
04:2104:4505:0905:3305:5706:2106:45

0 of 102 minutes covered

Dawn of Wednesday 17 October

Taken. The only dawn Caturdaśī reaches.

04:46 aruṇodaya beginssunrise 06:28
04:2204:4605:1005:3405:5806:2206:46

102 of 102 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 11:59 on Tue 16 Oct to 09:36 on Wed 17 Oct.

    1906-10-16T03:58:50Z → 1906-10-17T01:35:38Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:45–06:27 on the 16th, 04:46–06:28 on the 17th.

    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 102 minutes on the 16th and 102 of 102 on the 17th.

    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 11230 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1906: Wednesday 17 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1906 falls on Wednesday 17 October. Caturdaśī runs from 11:59 on Tue 16 Oct to 09:36 on Wed 17 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1906/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 17 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 17 Oct
compat-drikpanchangComparison profileWed 17 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 16thCoveredAruṇodaya 17thCoveredRuled
Los Angeles19:59 → 17:3604:17101 min04:180 min16 Oct
Chicago21:59 → 19:3604:20103 min04:210 min16 Oct
Jersey City22:59 → 20:3604:25103 min04:260 min16 Oct
Port of Spain23:59 → 21:3604:1897 min04:180 min16 Oct
London03:59 → 01:3604:39106 min04:400 min16 Oct
Durban05:59 → 03:3603:490 min03:480 min16 Oct
Dubai07:40 → 05:1704:190 min04:1957 min17 Oct
Delhi09:29 → 07:0604:420 min04:42100 min17 Oct
Kolkata09:29 → 07:0603:540 min03:5599 min17 Oct
Singapore10:59 → 08:3604:130 min04:1395 min17 Oct
Sydney13:59 → 11:3603:460 min03:4589 min17 Oct
Suva15:54 → 13:3104:010 min04:0092 min17 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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