Ruling · Naraka Caturdaśī (Choti Diwali) · 1954

Monday 25 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 327 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 Monday 25 October

Taken. The only dawn Caturdaśī reaches.

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

105 of 105 minutes covered

Dawn of Tuesday 26 October

Caturdaśī is absent from aruṇodaya. Not taken.

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

0 of 105 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 21:17 on Sun 24 Oct to 23:25 on Mon 25 Oct.

    1954-10-24T13:16:50Z → 1954-10-25T15:25:13Z

  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 105 of 105 minutes on the 25th and 0 of 105 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 19647 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1954: Monday 25 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1954 falls on Monday 25 October. Caturdaśī runs from 21:17 on Sun 24 Oct to 23:25 on Mon 25 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1954/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 25 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 25 Oct
compat-drikpanchangComparison profileMon 25 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 24thCoveredAruṇodaya 25thCoveredRuled
Los Angeles05:17 → 07:2504:2249 min04:23104 min24 Oct
Chicago07:17 → 09:2504:270 min04:28106 min25 Oct
Jersey City08:17 → 10:2504:320 min04:32106 min25 Oct
Port of Spain09:17 → 11:2504:190 min04:1998 min25 Oct
London13:17 → 15:2504:490 min04:50111 min25 Oct
Durban15:17 → 17:2503:420 min03:4188 min25 Oct
Dubai17:17 → 19:2504:410 min04:41101 min25 Oct
Delhi18:47 → 20:5504:460 min04:46102 min25 Oct
Kolkata18:47 → 20:5503:570 min03:57100 min25 Oct
Singapore20:47 → 22:5504:410 min04:4195 min25 Oct
Sydney23:17 → 01:2503:380 min03:3786 min25 Oct
Suva01:17 → 03:2504:010 min04:0191 min25 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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