Ruling · Naraka Caturdaśī (Choti Diwali) · 2010

Friday 5 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 523 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 Thursday 4 November

Caturdaśī is absent from aruṇodaya. Not taken.

05:00 aruṇodaya beginssunrise 06:48
04:3605:0005:2405:4806:1206:3607:00

0 of 108 minutes covered

Dawn of Friday 5 November

Taken. The only dawn Caturdaśī reaches.

05:01 aruṇodaya beginssunrise 06:49
04:3705:0105:2505:4906:1306:3707:01

109 of 109 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 18:28 on Thu 4 Nov to 15:32 on Fri 5 Nov.

    2010-11-04T10:27:59Z → 2010-11-05T07:32:07Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:00–06:48 on the 4th, 05:01–06:49 on the 5th.

    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 108 minutes on the 4th and 109 of 109 on the 5th.

    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 31365 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2010: Friday 5 November.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2010 falls on Friday 5 November. Caturdaśī runs from 18:28 on Thu 4 Nov to 15:32 on Fri 5 Nov and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2010/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 5 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 5 Nov
compat-drikpanchangComparison profileFri 5 Nov
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 4thCoveredAruṇodaya 5thCoveredRuled
Los Angeles03:28 → 00:3205:29106 min05:300 min4 Nov
Chicago05:28 → 02:3205:37110 min05:380 min4 Nov
Jersey City06:28 → 03:3205:4162 min05:420 min4 Nov
Port of Spain06:28 → 03:3204:200 min04:200 min4 Nov
London10:28 → 07:3205:030 min05:05116 min5 Nov
Durban12:28 → 09:3203:340 min03:3485 min5 Nov
Dubai14:28 → 11:3204:450 min04:46103 min5 Nov
Delhi15:58 → 13:0204:510 min04:52104 min5 Nov
Kolkata15:58 → 13:0204:010 min04:01102 min5 Nov
Singapore18:28 → 15:3205:110 min05:1196 min5 Nov
Sydney21:28 → 18:3204:290 min04:2884 min5 Nov
Suva23:28 → 20:3204:560 min04:5690 min5 Nov
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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