Ruling · Naraka Caturdaśī (Choti Diwali) · 1948

Sunday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 569 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 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 Monday 1 November

Caturdaśī is absent from aruṇodaya. Not taken.

04:58 aruṇodaya beginssunrise 06:45
04:3404:5805:2205:4606:1006:3406:58

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 19:28 on Sat 30 Oct to 16:38 on Sun 31 Oct.

    1948-10-30T11:27:33Z → 1948-10-31T08:37:59Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:57–06:44 on the 31st, 04:58–06:45 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 34156 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1948: Sunday 31 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1948 falls on Sunday 31 October. Caturdaśī runs from 19:28 on Sat 30 Oct to 16:38 on Sun 31 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1948/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 31 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 31 Oct
compat-drikpanchangComparison profileSun 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 Angeles04:28 → 01:3805:26105 min05:270 min30 Oct
Chicago05:28 → 02:3804:3353 min04:330 min30 Oct
Jersey City06:28 → 03:3804:370 min04:380 min30 Oct
Port of Spain07:28 → 04:3804:190 min04:1919 min31 Oct
London12:28 → 08:3805:570 min04:58114 min31 Oct
Durban13:28 → 10:3803:370 min03:3786 min31 Oct
Dubai15:28 → 12:3804:430 min04:44102 min31 Oct
Delhi16:58 → 14:0804:490 min04:49103 min31 Oct
Kolkata16:58 → 14:0803:590 min03:59101 min31 Oct
Singapore18:58 → 16:0804:410 min04:4195 min31 Oct
Sydney21:28 → 18:3803:330 min03:3285 min31 Oct
Suva23:28 → 20:3803:580 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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