Ruling · Naraka Caturdaśī (Choti Diwali) · 1963

Wednesday 16 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 601 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 Wednesday 16 October

Taken. The only dawn Caturdaśī reaches.

04:45 aruṇodaya beginssunrise 06:28
04:2104:4505:0905:3305:5706:2106:45

102 of 102 minutes covered

Dawn of Thursday 17 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:46 aruṇodaya beginssunrise 06:29
04:2204:4605:1005:3405:5806:2206:46

0 of 103 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 17:06 on Tue 15 Oct to 18:45 on Wed 16 Oct.

    1963-10-15T09:05:55Z → 1963-10-16T10:44:55Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:45–06:28 on the 16th, 04:46–06:29 on the 17th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 102 of 102 minutes on the 16th and 0 of 103 on the 17th.

    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 36072 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1963: Wednesday 16 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1963 falls on Wednesday 16 October. Caturdaśī runs from 17:06 on Tue 15 Oct to 18:45 on Wed 16 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1963/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 16 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 16 Oct
compat-drikpanchangComparison profileWed 16 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 15thCoveredAruṇodaya 16thCoveredRuled
Los Angeles02:06 → 03:4505:17101 min05:170 min15 Oct
Chicago04:06 → 05:4505:20103 min05:2024 min15 Oct
Jersey City05:06 → 06:4505:25103 min05:2580 min15 Oct
Port of Spain05:06 → 06:4504:1849 min04:1897 min15 Oct
London10:06 → 11:4505:380 min05:39106 min16 Oct
Durban11:06 → 12:4503:490 min03:4890 min16 Oct
Dubai13:06 → 14:4504:380 min04:3899 min16 Oct
Delhi14:36 → 16:1504:420 min04:42100 min16 Oct
Kolkata14:36 → 16:1503:540 min03:5499 min16 Oct
Singapore16:36 → 18:1504:430 min04:4395 min16 Oct
Sydney19:06 → 20:4503:460 min03:4589 min16 Oct
Suva21:06 → 22:4504:060 min04:0692 min16 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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