Ruling · Naraka Caturdaśī (Choti Diwali) · 1986

Saturday 1 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 598 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 Friday 31 October

Caturdaśī is absent from aruṇodaya. Not taken.

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

0 of 107 minutes covered

Dawn of Saturday 1 November

Taken. The only dawn Caturdaśī reaches.

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

107 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 18:54 on Fri 31 Oct to 16:43 on Sat 1 Nov.

    1986-10-31T10:53:31Z → 1986-11-01T08:42:31Z

  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 0 of 107 minutes on the 31st and 107 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 35863 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1986: Saturday 1 November.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1986 falls on Saturday 1 November. Caturdaśī runs from 18:54 on Fri 31 Oct to 16:43 on Sat 1 Nov and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1986/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 1 Nov
Ahargaṇa, classicalDisc centre, no refractionSat 1 Nov
compat-drikpanchangComparison profileSat 1 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 31stCoveredAruṇodaya 1stCoveredRuled
Los Angeles02:54 → 00:4304:27105 min04:270 min31 Oct
Chicago04:54 → 02:4304:3388 min04:340 min31 Oct
Jersey City05:54 → 03:4304:3732 min04:380 min31 Oct
Port of Spain06:54 → 04:4304:190 min04:1923 min1 Nov
London10:54 → 08:4304:580 min04:59114 min1 Nov
Durban12:54 → 10:4303:370 min03:3686 min1 Nov
Dubai14:54 → 12:4304:430 min04:44102 min1 Nov
Delhi16:24 → 14:1304:490 min04:49103 min1 Nov
Kolkata16:24 → 14:1303:590 min03:59101 min1 Nov
Singapore18:54 → 16:4305:110 min05:1195 min1 Nov
Sydney21:54 → 19:4304:320 min04:3185 min1 Nov
Suva22:54 → 20:4303:580 min03:5790 min1 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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