Ruling · Naraka Caturdaśī (Choti Diwali) · 1944

Monday 16 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 151 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 Sunday 15 October

Caturdaśī is absent from aruṇodaya. Not taken.

05:45 aruṇodaya beginssunrise 07:27
05:2105:4506:0906:3306:5707:2107:45

0 of 102 minutes covered

Dawn of Monday 16 October

Taken. The only dawn Caturdaśī reaches.

05:46 aruṇodaya beginssunrise 07:28
05:2205:4606:1006:3406:5807:2207:46

102 of 102 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 09:58 on Sun 15 Oct to 12:23 on Mon 16 Oct.

    1944-10-15T00:57:44Z → 1944-10-16T03:22:49Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:45–07:27 on the 15th, 05:46–07:28 on the 16th.

    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 102 minutes on the 15th and 102 of 102 on the 16th.

    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 9030 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1944: Monday 16 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1944 falls on Monday 16 October. Caturdaśī runs from 09:58 on Sun 15 Oct to 12:23 on Mon 16 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1944/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 16 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 16 Oct
compat-drikpanchangComparison profileMon 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 Angeles17:58 → 20:2305:17101 min05:180 min15 Oct
Chicago19:58 → 22:2305:20103 min05:210 min15 Oct
Jersey City20:58 → 23:2305:25103 min05:260 min15 Oct
Port of Spain21:58 → 00:2305:1897 min05:180 min15 Oct
London01:58 → 04:2305:38106 min05:400 min15 Oct
Durban02:58 → 05:2303:4990 min03:4890 min15 Oct
Dubai04:58 → 07:2304:3879 min04:3899 min15 Oct
Delhi07:28 → 09:5305:420 min05:42100 min16 Oct
Kolkata07:28 → 09:5304:540 min04:5599 min16 Oct
Singapore09:58 → 12:2306:130 min06:1395 min16 Oct
Sydney10:58 → 13:2303:460 min03:4589 min16 Oct
Suva12:58 → 15:2304:060 min04:0592 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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