Ruling · Candra Ṣaṣṭhī · 2023

Wednesday 4 October

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 464 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 Tuesday 3 October

Ṣaṣṭhī does not hold at moonrise. Not taken.

21:09 moonrise
19:5720:2120:4521:0921:3321:5722:21

Absent at moonrise

Moonrise of Wednesday 4 October

Taken. The only moonrise Ṣaṣṭhī holds at.

21:58 moonrise
20:4621:1021:3421:5822:2222:4623:10

Holds at moonrise

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

How it was decided

  1. 01

    Aṅga

    Ṣaṣṭhī runs from 05:33 on Wed 4 Oct to 05:42 on Thu 5 Oct.

    2023-10-04T00:03:27Z → 2023-10-05T00:11:47Z

  2. 02

    Kāla

    Moonrise is at 21:09 on the 3rd and 21:58 on the 4th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is not on the 3rd and is on the 4th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 27838 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Ujjain, 2023: Wednesday 4 October.

    confidence: determinate

Say it like this

In Ujjain, Candra Ṣaṣṭhī 2023 falls on Wednesday 4 October. Ṣaṣṭhī runs from 05:33 on Wed 4 Oct to 05:42 on Thu 5 Oct and is current at moonrise that day.

ahargana.org/ujjain/festivals/2023/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 4 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 4 Oct
compat-drikpanchangComparison profileWed 4 Oct
No institution has a recorded ruling for Ujjain.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/chandra-shashthi · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Kṛṣṇa · Ṣaṣṭhī
Kāla
Moonrise
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 103

“K 6 Candra sasthi (Sasthi 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. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceṢaṣṭhīMoonrise 4thCoveredMoonrise 5thCoveredRuled
Los Angeles17:03 → 17:1222:20no23:13no3 Oct
Chicago19:03 → 19:1221:43no22:36no3 Oct
Jersey City20:03 → 20:1221:52no22:44no3 Oct
Port of Spain20:03 → 20:1222:27no23:21no3 Oct
London01:03 → 01:1220:48holds21:36no4 Oct
Durban02:03 → 02:1223:40holds00:37no4 Oct
Dubai04:03 → 04:1221:48holds22:40no4 Oct
Delhi05:33 → 05:4221:37holds22:29no4 Oct
Kolkata05:33 → 05:4221:07holds22:00no4 Oct
Singapore08:03 → 08:1223:21holds00:16no4 Oct
Sydney11:03 → 11:1200:31holds01:31no4 Oct
Suva12:03 → 12:1222:54holds23:52no4 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
chandra-shashthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s