Ruling · Naraka Caturdaśī (Choti Diwali) · 2034

Thursday 9 November

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 4 min 34 s away. Say “contested”.

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 9 November

Taken. Both dawns qualify; the rule takes the first.

05:04 aruṇodaya beginssunrise 06:54
04:4005:0405:2805:5206:1606:4007:0407:28

110 of 110 minutes covered

Dawn of Friday 10 November

Qualifies with 106 of 110 minutes. Not taken.

05:05 aruṇodaya beginssunrise 06:55
Caturdaśī ends 06:50:29
04:4105:0505:2905:5306:1706:4107:0507:29

106 of 110 minutes covered, the first 106

Caturdaśī presentAruṇodaya, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 04:35 on Thu 9 Nov to 06:50 on Fri 10 Nov.

    2034-11-08T20:34:39Z → 2034-11-09T22:50:29Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:04–06:54 on the 9th, 05:05–06:55 on the 10th.

    arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 110 of 110 minutes on the 9th and 106 of 110 on the 10th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both dawns qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 274 s < 300 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2034: Thursday 9 November.

    confidence: boundary (margin)

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2034 falls on Thursday 9 November. Caturdaśī runs from 04:35 on Thu 9 Nov to 06:50 on Fri 10 Nov and covers all of aruṇodaya that dawn. It also reaches the next dawn for 106 minutes; by the rule the first dawn is taken. It is 4 min 34 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2034/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 9 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 9 Nov
compat-drikpanchangComparison profileThu 9 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 8thCoveredAruṇodaya 9thCoveredRuled
Los Angeles12:35 → 14:5004:320 min04:33108 min9 Nov
Chicago14:35 → 16:5004:410 min04:42112 min9 Nov
Jersey City15:35 → 17:5004:450 min04:46111 min9 Nov
Port of Spain16:35 → 18:5004:210 min04:2199 min9 Nov
London20:35 → 22:5005:090 min05:10118 min9 Nov
Durban22:35 → 00:5003:320 min03:3184 min9 Nov
Dubai00:35 → 02:5004:470 min04:48104 min9 Nov
Delhi02:05 → 04:2004:530 min04:54105 min9 Nov
Kolkata02:05 → 04:2004:020 min04:03103 min9 Nov
Singapore04:35 → 06:5005:110 min05:1196 min9 Nov
Sydney07:35 → 09:5004:260 min04:260 min10 Nov
Suva08:35 → 10:5003:550 min03:550 min10 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