Ruling · Naraka Caturdaśī (Choti Diwali) · 2028

Tuesday 17 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 486 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 16 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:46 aruṇodaya beginssunrise 06:29
04:2204:4605:1005:3405:5806:2206:46

0 of 103 minutes covered

Dawn of Tuesday 17 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

Caturdaśī presentAruṇodaya, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 18:16 on Mon 16 Oct to 14:36 on Tue 17 Oct.

    2028-10-16T10:15:54Z → 2028-10-17T06:35:32Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:46–06:29 on the 16th, 04:47–06:30 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 103 minutes on the 16th and 103 of 103 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 29138 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2028: Tuesday 17 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2028 falls on Tuesday 17 October. Caturdaśī runs from 18:16 on Mon 16 Oct to 14:36 on Tue 17 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2028/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 17 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 17 Oct
compat-drikpanchangComparison profileTue 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 Angeles03:16 → 23:3605:18102 min05:190 min16 Oct
Chicago05:16 → 01:3605:21104 min05:220 min16 Oct
Jersey City06:16 → 02:3605:2654 min05:270 min16 Oct
Port of Spain06:16 → 02:3604:180 min04:180 min16 Oct
London11:16 → 07:3605:400 min05:42107 min17 Oct
Durban12:16 → 08:3603:470 min03:4689 min17 Oct
Dubai14:16 → 10:3604:380 min04:39100 min17 Oct
Delhi15:46 → 12:0604:430 min04:43100 min17 Oct
Kolkata15:46 → 12:0603:550 min03:5599 min17 Oct
Singapore18:16 → 14:3605:120 min05:1295 min17 Oct
Sydney21:16 → 17:3604:440 min04:4388 min17 Oct
Suva22:16 → 18:3604:050 min04:0492 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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