Ruling · Naraka Caturdaśī (Choti Diwali) · 2080

Sunday 10 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 221 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 10 November

Taken. The only dawn Caturdaśī reaches.

05:06 aruṇodaya beginssunrise 06:56
04:4205:0605:3005:5406:1806:4207:0607:30

110 of 110 minutes covered

Dawn of Monday 11 November

Caturdaśī is absent from aruṇodaya. Not taken.

05:07 aruṇodaya beginssunrise 06:57
04:4305:0705:3105:5506:1906:4307:0707:31

0 of 111 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 01:25 on Sun 10 Nov to 00:21 on Mon 11 Nov.

    2080-11-09T17:25:19Z → 2080-11-10T16:20:31Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:06–06:56 on the 10th, 05:07–06:57 on the 11th.

    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 10th and 0 of 111 on the 11th.

    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 13231 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2080: Sunday 10 November.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2080 falls on Sunday 10 November. Caturdaśī runs from 01:25 on Sun 10 Nov to 00:21 on Mon 11 Nov and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2080/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 10 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 10 Nov
compat-drikpanchangComparison profileSun 10 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 9thCoveredAruṇodaya 10thCoveredRuled
Los Angeles09:25 → 08:2104:340 min04:34108 min10 Nov
Chicago11:25 → 10:2104:430 min04:44112 min10 Nov
Jersey City12:25 → 11:2104:460 min04:47111 min10 Nov
Port of Spain13:25 → 12:2104:210 min04:2299 min10 Nov
London17:25 → 16:2105:110 min05:13119 min10 Nov
Durban19:25 → 18:2103:310 min03:3184 min10 Nov
Dubai21:25 → 20:2104:480 min04:49104 min10 Nov
Delhi22:55 → 21:5104:550 min04:55105 min10 Nov
Kolkata22:55 → 21:5104:030 min04:04103 min10 Nov
Singapore01:25 → 00:2105:110 min05:1196 min10 Nov
Sydney04:25 → 03:2104:250 min04:2582 min10 Nov
Suva05:25 → 04:2103:550 min03:550 min11 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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