Ruling · Naraka Caturdaśī (Choti Diwali) · 2049

Monday 25 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 265 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.

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

105 of 105 minutes covered

Dawn of Tuesday 26 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:53 aruṇodaya beginssunrise 06:39
04:2904:5305:1705:4106:0506:2906:53

0 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 00:10 on Mon 25 Oct to 00:29 on Tue 26 Oct.

    2049-10-24T16:10:28Z → 2049-10-25T16:28:40Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:53–06:38 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 105 of 105 minutes on the 25th and 0 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 15884 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2049: Monday 25 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2049 falls on Monday 25 October. Caturdaśī runs from 00:10 on Mon 25 Oct to 00:29 on Tue 26 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2049/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 Angeles09:10 → 09:2905:230 min05:23104 min25 Oct
Chicago11:10 → 11:2905:280 min05:29107 min25 Oct
Jersey City12:10 → 12:2905:320 min05:33106 min25 Oct
Port of Spain12:10 → 12:2904:190 min04:1998 min25 Oct
London17:10 → 17:2905:500 min05:51111 min25 Oct
Durban18:10 → 18:2903:410 min03:4087 min25 Oct
Dubai20:10 → 20:2904:410 min04:41101 min25 Oct
Delhi21:40 → 21:5904:460 min04:46102 min25 Oct
Kolkata21:40 → 21:5903:570 min03:57101 min25 Oct
Singapore00:10 → 00:2905:110 min05:1195 min25 Oct
Sydney03:10 → 03:2904:370 min04:3686 min25 Oct
Suva04:10 → 04:2904:010 min04:0081 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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