Ruling · Naraka Caturdaśī (Choti Diwali) · 2093

Monday 19 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 580 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 Sunday 18 October

Caturdaśī is absent from aruṇodaya. Not taken.

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

0 of 103 minutes covered

Dawn of Monday 19 October

Taken. The only dawn Caturdaśī reaches.

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

104 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 16:15 on Sun 18 Oct to 16:13 on Mon 19 Oct.

    2093-10-18T08:15:22Z → 2093-10-19T08:12:33Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:48–06:31 on the 18th, 04:49–06:32 on the 19th.

    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 18th and 104 of 104 on the 19th.

    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 34805 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2093: Monday 19 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2093 falls on Monday 19 October. Caturdaśī runs from 16:15 on Sun 18 Oct to 16:13 on Mon 19 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2093/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 19 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 19 Oct
compat-drikpanchangComparison profileMon 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 Angeles01:15 → 01:1305:20102 min05:200 min18 Oct
Chicago03:15 → 03:1305:24104 min05:240 min18 Oct
Jersey City04:15 → 04:1305:28104 min05:290 min18 Oct
Port of Spain04:15 → 04:1304:1997 min04:190 min18 Oct
London09:15 → 09:1305:430 min05:45109 min19 Oct
Durban10:15 → 10:1303:460 min03:4589 min19 Oct
Dubai12:15 → 12:1304:390 min04:40100 min19 Oct
Delhi13:45 → 13:4304:440 min04:44101 min19 Oct
Kolkata13:45 → 13:4303:560 min03:56100 min19 Oct
Singapore16:15 → 16:1305:120 min05:1295 min19 Oct
Sydney19:15 → 19:1304:420 min04:4188 min19 Oct
Suva20:15 → 20:1304:040 min04:0392 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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