Ruling · Naraka Caturdaśī (Choti Diwali) · 1985

Monday 11 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 33 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 Monday 11 November

Taken. The only dawn Caturdaśī reaches.

05:06 aruṇodaya beginssunrise 06:56
Caturdaśī begins 05:38:59
04:4205:0605:3005:5406:1806:4207:0607:30

77 of 110 minutes covered, the last 77

Dawn of Tuesday 12 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 05:39 on Mon 11 Nov to 02:05 on Tue 12 Nov.

    1985-11-10T21:39:00Z → 1985-11-11T18:04:40Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:06–06:56 on the 11th, 05:07–06:57 on the 12th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 77 of 110 minutes on the 11th and 0 of 111 on the 12th.

    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 1994 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1985: Monday 11 November.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1985 falls on Monday 11 November. Caturdaśī runs from 05:39 on Mon 11 Nov to 02:05 on Tue 12 Nov and covers 77 of 110 minutes of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1985/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 11 Nov
Ahargaṇa, classicalDisc centre, no refractionMon 11 Nov
compat-drikpanchangComparison profileMon 11 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 10thCoveredAruṇodaya 11thCoveredRuled
Los Angeles13:39 → 10:0504:340 min04:34108 min11 Nov
Chicago15:39 → 12:0504:430 min04:43112 min11 Nov
Jersey City16:39 → 13:0504:460 min04:47112 min11 Nov
Port of Spain17:39 → 14:0504:210 min04:2299 min11 Nov
London21:39 → 18:0505:110 min05:13119 min11 Nov
Durban23:39 → 20:0503:310 min03:3184 min11 Nov
Dubai01:39 → 22:0504:480 min04:49104 min11 Nov
Delhi03:09 → 23:3504:550 min04:55105 min11 Nov
Kolkata03:09 → 23:3504:030 min04:04103 min11 Nov
Singapore05:39 → 02:0505:110 min05:1168 min11 Nov
Sydney08:39 → 05:0504:250 min04:250 min12 Nov
Suva09:39 → 06:0503:550 min03:550 min12 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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