Ruling · Naraka Caturdaśī (Choti Diwali) · 2055

Tuesday 19 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 139 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 Tuesday 19 October

Taken. The only dawn Caturdaśī reaches.

04:48 aruṇodaya beginssunrise 06:31
04:2404:4805:1205:3606:0006:2406:48

103 of 103 minutes covered

Dawn of Wednesday 20 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:49 aruṇodaya beginssunrise 06:32
04:2504:4905:1305:3706:0106:2506:49

0 of 104 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 02:29 on Tue 19 Oct to 22:43 on Tue 19 Oct.

    2055-10-18T18:29:24Z → 2055-10-19T14:43:00Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:48–06:31 on the 19th, 04:49–06:32 on the 20th.

    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 19th and 0 of 104 on the 20th.

    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 8316 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2055: Tuesday 19 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2055 falls on Tuesday 19 October. Caturdaśī runs from 02:29 on Tue 19 Oct to 22:43 on Tue 19 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2055/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 19 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 19 Oct
compat-drikpanchangComparison profileTue 19 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 18thCoveredAruṇodaya 19thCoveredRuled
Los Angeles11:29 → 07:4305:190 min05:20102 min19 Oct
Chicago13:29 → 09:4305:230 min05:23105 min19 Oct
Jersey City14:29 → 10:4305:270 min05:28104 min19 Oct
Port of Spain14:29 → 10:4304:180 min04:1897 min19 Oct
London19:29 → 15:4305:420 min05:43108 min19 Oct
Durban20:29 → 16:4303:460 min03:4589 min19 Oct
Dubai22:29 → 18:4304:390 min04:39100 min19 Oct
Delhi23:59 → 20:1304:430 min04:44101 min19 Oct
Kolkata23:59 → 20:1303:550 min03:5599 min19 Oct
Singapore02:29 → 22:4305:120 min05:1295 min19 Oct
Sydney05:29 → 01:4304:430 min04:4240 min19 Oct
Suva06:29 → 02:4304:040 min04:030 min19 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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