Ruling · Naraka Caturdaśī (Choti Diwali) · 1914

Sunday 18 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 421 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 Sunday 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

Dawn of Monday 19 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:47 aruṇodaya beginssunrise 06:31
04:2304:4705:1105:3505:5906:2306:47

0 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 21:46 on Sat 17 Oct to 18:18 on Sun 18 Oct.

    1914-10-17T13:45:52Z → 1914-10-18T10:18:25Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:47–06:30 on the 18th, 04:47–06:31 on the 19th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 103 of 103 minutes on the 18th and 0 of 103 on the 19th.

    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 25251 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1914: Sunday 18 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1914 falls on Sunday 18 October. Caturdaśī runs from 21:46 on Sat 17 Oct to 18:18 on Sun 18 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1914/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 18 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 18 Oct
compat-drikpanchangComparison profileSun 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 Angeles05:46 → 02:1804:1814 min04:190 min17 Oct
Chicago07:46 → 04:1804:210 min04:220 min17 Oct
Jersey City08:46 → 05:1804:260 min04:2752 min18 Oct
Port of Spain09:46 → 06:1804:180 min04:1897 min18 Oct
London13:46 → 10:1804:400 min04:41107 min18 Oct
Durban15:46 → 12:1803:480 min03:4789 min18 Oct
Dubai17:27 → 13:5904:190 min04:20100 min18 Oct
Delhi19:16 → 15:4804:420 min04:43100 min18 Oct
Kolkata19:16 → 15:4803:550 min03:5599 min18 Oct
Singapore20:46 → 17:1804:130 min04:1295 min18 Oct
Sydney23:46 → 20:1803:450 min03:4488 min18 Oct
Suva01:41 → 22:1304:000 min03:5992 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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