Ruling · Naraka Caturdaśī (Choti Diwali) · 1912

Friday 8 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 257 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 7 November

Caturdaśī is absent from aruṇodaya. Not taken.

05:02 aruṇodaya beginssunrise 06:51
04:3805:0205:2605:5006:1406:3807:02

0 of 109 minutes covered

Dawn of Friday 8 November

Taken. The only dawn Caturdaśī reaches.

05:03 aruṇodaya beginssunrise 06:53
04:3905:0305:2705:5106:1506:3907:03

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 12:36 on Thu 7 Nov to 11:10 on Fri 8 Nov.

    1912-11-07T04:36:23Z → 1912-11-08T03:09:35Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:02–06:51 on the 7th, 05:03–06:53 on the 8th.

    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 109 minutes on the 7th and 109 of 109 on the 8th.

    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 15424 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1912: Friday 8 November.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1912 falls on Friday 8 November. Caturdaśī runs from 12:36 on Thu 7 Nov to 11:10 on Fri 8 Nov and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1912/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 8 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 8 Nov
compat-drikpanchangComparison profileFri 8 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 7thCoveredAruṇodaya 8thCoveredRuled
Los Angeles20:36 → 19:1004:31107 min04:320 min7 Nov
Chicago22:36 → 21:1004:40111 min04:410 min7 Nov
Jersey City23:36 → 22:1004:44110 min04:440 min7 Nov
Port of Spain00:36 → 23:1004:2198 min04:210 min7 Nov
London04:36 → 03:1005:07117 min05:080 min7 Nov
Durban06:36 → 05:1003:330 min03:3285 min8 Nov
Dubai08:17 → 06:5104:280 min04:28103 min8 Nov
Delhi10:06 → 08:4004:530 min04:53105 min8 Nov
Kolkata10:06 → 08:4004:020 min04:02103 min8 Nov
Singapore11:36 → 10:1004:110 min04:1196 min8 Nov
Sydney14:36 → 13:1003:270 min03:2783 min8 Nov
Suva16:31 → 15:0503:510 min03:5089 min8 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

About Ahargaṇa