Ruling · Karaka Caturthī (Karwa Chauth) · 1900

Thursday 11 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 520 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two moonrises

One ghaṭī is 24 minutes. The moonrise is read as disc centre, 31′.

Moonrise of Thursday 11 October

Taken. The only moonrise Caturthī holds at.

19:43 moonrise
18:3118:5519:1919:4320:0720:3120:55

Holds at moonrise

Moonrise of Friday 12 October

Caturthī does not hold at moonrise. Not taken.

20:37 moonrise
19:2519:4920:1320:3721:0121:2521:49

Absent at moonrise

Caturthī presentMoonrise, the instant the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 11:03 on Thu 11 Oct to 08:36 on Fri 12 Oct.

    1900-10-11T02:57:59Z → 1900-10-12T00:30:49Z

  2. 02

    Kāla

    Moonrise is at 19:43 on the 11th and 20:37 on the 12th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Caturthī must be current at moonrise. It is on the 11th and is not on the 12th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one moonrise qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 31226 s

  5. 05

    Ruling

    Karaka Caturthī, Baoding, 1900: Thursday 11 October.

    confidence: determinate

Say it like this

In Baoding, Karaka Caturthī (Karwa Chauth) 1900 falls on Thursday 11 October. Caturthī runs from 11:03 on Thu 11 Oct to 08:36 on Fri 12 Oct and is current at moonrise that day.

ahargana.org/baoding/festivals/1900/karaka-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 11 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 11 Oct
compat-drikpanchangComparison profileThu 11 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/karaka-chaturthi · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Kṛṣṇa · Caturthī
Kāla
Moonrise
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“K 4 Karaka caturthi (current at moon-rise, 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.

PlaceCaturthīMoonrise 11thCoveredMoonrise 12thCoveredRuled
Los Angeles18:58 → 16:3120:00no20:57no10 Oct
Chicago20:58 → 18:3119:32no20:28no10 Oct
Jersey City21:58 → 19:3119:39no20:35no10 Oct
Port of Spain22:58 → 20:3120:49no21:47no10 Oct
London02:58 → 00:3118:54holds19:47no11 Oct
Durban04:28 → 02:0121:04holds22:05no11 Oct
Dubai06:39 → 04:1219:59holds20:56no11 Oct
Delhi08:19 → 05:5220:01holds20:57no11 Oct
Kolkata08:19 → 05:5219:27holds20:23no11 Oct
Singapore09:53 → 07:2620:31holds21:30no11 Oct
Sydney12:58 → 10:3121:21holds22:24no11 Oct
Suva14:53 → 12:2620:51holds21:52no11 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
karaka-chaturthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa