Ruling · Naraka Caturdaśī (Choti Diwali) · 2082

Wednesday 21 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 9 min 35 s.

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 20 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:49 aruṇodaya beginssunrise 06:33
04:2504:4905:1305:3706:0106:2506:49

0 of 104 minutes covered

Dawn of Wednesday 21 October

Taken. The only dawn Caturdaśī reaches.

04:50 aruṇodaya beginssunrise 06:34
Caturdaśī ends 06:43:41
04:2604:5005:1405:3806:0206:2606:50

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 10:21 on Tue 20 Oct to 06:44 on Wed 21 Oct.

    2082-10-20T02:21:02Z → 2082-10-20T22:43:41Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:49–06:33 on the 20th, 04:50–06:34 on the 21st.

    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 104 minutes on the 20th and 104 of 104 on the 21st.

    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 575 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2082: Wednesday 21 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2082 falls on Wednesday 21 October. Caturdaśī runs from 10:21 on Tue 20 Oct to 06:44 on Wed 21 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2082/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 21 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 21 Oct
compat-drikpanchangComparison profileWed 21 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 20thCoveredAruṇodaya 21stCoveredRuled
Los Angeles19:21 → 15:4405:21103 min05:210 min20 Oct
Chicago21:21 → 17:4405:25105 min05:260 min20 Oct
Jersey City22:21 → 18:4405:29105 min05:300 min20 Oct
Port of Spain22:21 → 18:4404:1997 min04:190 min20 Oct
London03:21 → 23:4405:45109 min05:470 min20 Oct
Durban04:21 → 00:4403:4452 min03:430 min20 Oct
Dubai06:21 → 02:4404:400 min04:400 min20 Oct
Delhi07:51 → 04:1404:440 min04:450 min20 Oct
Kolkata07:51 → 04:1403:560 min03:5617 min21 Oct
Singapore10:21 → 06:4405:120 min05:1292 min21 Oct
Sydney13:21 → 09:4404:410 min04:4087 min21 Oct
Suva14:21 → 10:4404:030 min04:0291 min21 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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