Ruling · Naraka Caturdaśī (Choti Diwali) · 2006

Saturday 21 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 109 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 20 October

Caturdaśī is absent from aruṇodaya. Not taken.

04:49 aruṇodaya beginssunrise 06:32
04:2504:4905:1305:3706:0106:2506:49

0 of 104 minutes covered

Dawn of Saturday 21 October

Taken. The only dawn Caturdaśī reaches.

04:49 aruṇodaya beginssunrise 06:33
04:2504:4905:1305:3706:0106:2506:49

104 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 08:21 on Fri 20 Oct to 10:55 on Sat 21 Oct.

    2006-10-20T00:21:18Z → 2006-10-21T02:55:18Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 04:49–06:32 on the 20th, 04:49–06:33 on the 21st.

    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 104 minutes on the 20th and 104 of 104 on the 21st.

    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 6543 s

  5. 05

    Ruling

    Naraka Caturdaśī, Baoding, 2006: Saturday 21 October.

    confidence: determinate

Say it like this

In Baoding, Naraka Caturdaśī (Choti Diwali) 2006 falls on Saturday 21 October. Caturdaśī runs from 08:21 on Fri 20 Oct to 10:55 on Sat 21 Oct and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2006/naraka-chaturdashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 21 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 21 Oct
compat-drikpanchangComparison profileSat 21 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 20thCoveredAruṇodaya 21stCoveredRuled
Los Angeles17:21 → 19:5505:20103 min05:210 min20 Oct
Chicago19:21 → 21:5505:24105 min05:250 min20 Oct
Jersey City20:21 → 22:5505:29104 min05:300 min20 Oct
Port of Spain20:21 → 22:5504:1897 min04:180 min20 Oct
London01:21 → 03:5505:44109 min05:460 min20 Oct
Durban02:21 → 04:5503:4589 min03:4472 min20 Oct
Dubai04:21 → 06:5504:39100 min04:40100 min20 Oct
Delhi05:51 → 08:2504:4434 min04:44101 min20 Oct
Kolkata05:51 → 08:2503:560 min03:56100 min21 Oct
Singapore08:21 → 10:5505:120 min05:1295 min21 Oct
Sydney10:21 → 12:5503:410 min03:4087 min21 Oct
Suva12:21 → 14:5504:030 min04:0291 min21 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

About Ahargaṇa