Ruling · Karaka Caturthī (Karwa Chauth) · 2026

Thursday 29 October

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 96 minutes.

Decide it for

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two moonrises

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

Moonrise of Wednesday 28 October

Caturthī does not hold at moonrise. Not taken.

19:34 moonrise
18:2218:4619:1019:3419:5820:2220:46

Absent at moonrise

Moonrise of Thursday 29 October

Taken. The only moonrise Caturthī holds at.

20:35 moonrise
19:2319:4720:1120:3520:5921:2321:47

Holds 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 01:07 on Thu 29 Oct to 22:11 on Thu 29 Oct.

    2026-10-28T19:37:14Z → 2026-10-29T16:40:39Z

  2. 02

    Kāla

    Moonrise is at 19:34 on the 28th and 20:35 on the 29th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Caturthī must be current at moonrise. It is not on the 28th and is on the 29th.

    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 5732 s

  5. 05

    Ruling

    Karaka Caturthī, Ujjain, 2026: Thursday 29 October.

    confidence: determinate

Say it like this

In Ujjain, Karaka Caturthī (Karwa Chauth) 2026 falls on Thursday 29 October. Caturthī runs from 01:07 on Thu 29 Oct to 22:11 on Thu 29 Oct and is current at moonrise that day.

ahargana.org/ujjain/festivals/2026/karaka-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 29 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 29 Oct
compat-drikpanchangComparison profileThu 29 Oct
Rashtriya PanchangPrincipal festivals, 2026-27Thu 29 Oct

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 28thCoveredMoonrise 29thCoveredRuled
Los Angeles12:37 → 09:4120:00holds21:04no28 Oct
Chicago14:37 → 11:4119:24holds20:26no28 Oct
Jersey City15:37 → 12:4119:32holds20:34no28 Oct
Port of Spain15:37 → 12:4120:05holds21:10no28 Oct
London19:37 → 16:4117:29no18:26no28 Oct
Durban21:37 → 18:4121:13no22:20no28 Oct
Dubai23:37 → 20:4119:24no20:26holds29 Oct
Delhi01:07 → 22:1119:13no20:14holds29 Oct
Kolkata01:07 → 22:1118:43no19:44holds29 Oct
Singapore03:37 → 00:4120:55no21:59holds29 Oct
Sydney06:37 → 03:4122:01no23:11holds29 Oct
Suva07:37 → 04:4120:25no21:32holds29 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