Ruling · Naraka Caturdaśī (Choti Diwali) · 1929

Thursday 31 October

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 31 October

Taken. The only dawn Caturdaśī reaches.

04:57 aruṇodaya beginssunrise 06:44
04:3304:5705:2105:4506:0906:3306:57

107 of 107 minutes covered

Dawn of Friday 1 November

Caturdaśī is absent from aruṇodaya. Not taken.

04:57 aruṇodaya beginssunrise 06:45
04:3304:5705:2105:4506:0906:3306:57

0 of 107 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 20:13 on Wed 30 Oct to 19:53 on Thu 31 Oct.

    1929-10-30T12:13:04Z → 1929-10-31T11:52:37Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:57–06:44 on the 31st, 04:57–06:45 on the 1st.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 107 of 107 minutes on the 31st and 0 of 107 on the 1st.

    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 31409 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1929: Thursday 31 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1929 falls on Thursday 31 October. Caturdaśī runs from 20:13 on Wed 30 Oct to 19:53 on Thu 31 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1929/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 31 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 31 Oct
compat-drikpanchangComparison profileThu 31 Oct
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 30thCoveredAruṇodaya 31stCoveredRuled
Los Angeles04:13 → 03:5304:26105 min04:260 min30 Oct
Chicago06:13 → 05:5304:327 min04:3379 min30 Oct
Jersey City07:13 → 06:5304:370 min04:37108 min31 Oct
Port of Spain08:13 → 07:5304:190 min04:1998 min31 Oct
London12:13 → 11:5304:570 min04:58114 min31 Oct
Durban14:13 → 13:5303:370 min03:3786 min31 Oct
Dubai16:13 → 15:5304:430 min04:43102 min31 Oct
Delhi17:43 → 17:2304:480 min04:49103 min31 Oct
Kolkata17:43 → 17:2303:590 min03:59101 min31 Oct
Singapore19:13 → 18:5304:110 min04:1195 min31 Oct
Sydney22:13 → 21:5303:330 min03:3285 min31 Oct
Suva00:13 → 23:5303:580 min03:5890 min31 Oct
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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