Ruling · Naraka Caturdaśī (Choti Diwali) · 2030

Saturday 26 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 32 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 Friday 25 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:52 aruṇodaya beginssunrise 06:38
04:2804:5205:1605:4006:0406:2806:52

0 of 105 minutes covered

Dawn of Saturday 26 October

Taken. The only dawn Caturdaśī reaches.

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

106 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 09:41 on Fri 25 Oct to 07:11 on Sat 26 Oct.

    2030-10-25T01:40:36Z → 2030-10-25T23:11:10Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:52–06:38 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 0 of 105 minutes on the 25th and 106 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 1949 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2030: Saturday 26 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2030 falls on Saturday 26 October. Caturdaśī runs from 09:41 on Fri 25 Oct to 07:11 on Sat 26 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2030/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 26 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 26 Oct
compat-drikpanchangComparison profileSat 26 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 25thCoveredAruṇodaya 26thCoveredRuled
Los Angeles18:41 → 16:1105:23104 min05:240 min25 Oct
Chicago20:41 → 18:1105:28107 min05:290 min25 Oct
Jersey City21:41 → 19:1105:33106 min05:340 min25 Oct
Port of Spain21:41 → 19:1104:1998 min04:190 min25 Oct
London02:41 → 00:1105:51111 min05:520 min25 Oct
Durban03:41 → 01:1103:4187 min03:400 min25 Oct
Dubai05:41 → 03:1104:4142 min04:420 min25 Oct
Delhi07:11 → 04:4104:460 min04:470 min25 Oct
Kolkata07:11 → 04:4103:570 min03:5744 min26 Oct
Singapore09:41 → 07:1105:110 min05:1195 min26 Oct
Sydney12:41 → 10:1104:360 min04:3686 min26 Oct
Suva13:41 → 11:1104:000 min04:0091 min26 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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