Ruling · Naraka Caturdaśī (Choti Diwali) · 1938

Saturday 22 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 614 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 Saturday 22 October

Taken. The only dawn Caturdaśī reaches.

04:50 aruṇodaya beginssunrise 06:34
04:2604:5005:1405:3806:0206:2606:50

104 of 104 minutes covered

Dawn of Sunday 23 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:50 aruṇodaya beginssunrise 06:35
04:2604:5005:1405:3806:0206:2606:50

0 of 104 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 18:36 on Fri 21 Oct to 17:25 on Sat 22 Oct.

    1938-10-21T10:36:06Z → 1938-10-22T09:25:23Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:50–06:34 on the 22nd, 04:50–06:35 on the 23rd.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 104 of 104 minutes on the 22nd and 0 of 104 on the 23rd.

    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 36814 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1938: Saturday 22 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1938 falls on Saturday 22 October. Caturdaśī runs from 18:36 on Fri 21 Oct to 17:25 on Sat 22 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1938/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 22 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 22 Oct
compat-drikpanchangComparison profileSat 22 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 21stCoveredAruṇodaya 22ndCoveredRuled
Los Angeles02:36 → 01:2504:20103 min04:210 min21 Oct
Chicago04:36 → 03:2504:2593 min04:250 min21 Oct
Jersey City05:36 → 04:2504:2938 min04:300 min21 Oct
Port of Spain06:36 → 05:2504:180 min04:1867 min22 Oct
London10:36 → 09:2504:450 min04:46109 min22 Oct
Durban12:36 → 11:2503:440 min03:4388 min22 Oct
Dubai14:36 → 13:2504:400 min04:40100 min22 Oct
Delhi16:06 → 14:5504:440 min04:45101 min22 Oct
Kolkata16:06 → 14:5503:560 min03:56100 min22 Oct
Singapore17:56 → 16:4504:320 min04:3295 min22 Oct
Sydney20:36 → 19:2503:410 min03:4087 min22 Oct
Suva22:36 → 21:2504:030 min04:0291 min22 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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