Ruling · Naraka Caturdaśī (Choti Diwali) · 1959

Saturday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 196 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 30 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:56 aruṇodaya beginssunrise 06:42
04:3204:5605:2005:4406:0806:3206:56

0 of 107 minutes covered

Dawn of Saturday 31 October

Taken. The only dawn Caturdaśī reaches.

04:56 aruṇodaya beginssunrise 06:43
04:3204:5605:2005:4406:0806:3206:56

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 12:52 on Fri 30 Oct to 09:59 on Sat 31 Oct.

    1959-10-30T04:51:48Z → 1959-10-31T01:58:49Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:56–06:42 on the 30th, 04:56–06:43 on the 31st.

    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 30th and 107 of 107 on the 31st.

    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 11734 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 1959: Saturday 31 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 1959 falls on Saturday 31 October. Caturdaśī runs from 12:52 on Fri 30 Oct to 09:59 on Sat 31 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1959/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 31 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 31 Oct
compat-drikpanchangComparison profileSat 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 Angeles20:52 → 17:5904:26105 min04:260 min30 Oct
Chicago22:52 → 19:5904:32108 min04:330 min30 Oct
Jersey City23:52 → 20:5904:36108 min04:370 min30 Oct
Port of Spain00:52 → 21:5904:1998 min04:190 min30 Oct
London04:52 → 01:5904:56113 min04:570 min30 Oct
Durban06:52 → 03:5903:380 min03:3722 min31 Oct
Dubai08:52 → 05:5904:430 min04:4376 min31 Oct
Delhi10:22 → 07:2904:480 min04:49103 min31 Oct
Kolkata10:22 → 07:2903:590 min03:59101 min31 Oct
Singapore12:22 → 09:2904:410 min04:4195 min31 Oct
Sydney14:52 → 11:5903:330 min03:3285 min31 Oct
Suva16:52 → 13:5903:580 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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