Ruling · Candra Ṣaṣṭhī · 2029

Friday 28 September

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 638 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 Friday 28 September

Taken. The only moonrise Ṣaṣṭhī holds at.

21:53 moonrise
20:4121:0521:2921:5322:1722:4123:05

Holds at moonrise

Moonrise of Saturday 29 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

22:43 moonrise
21:3121:5522:1922:4323:0723:3123:55

Absent 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 09:51 on Fri 28 Sep to 12:05 on Sat 29 Sep.

    2029-09-28T04:20:47Z → 2029-09-29T06:34:38Z

  2. 02

    Kāla

    Moonrise is at 21:53 on the 28th and 22:43 on the 29th.

    moonrise: disc centre, 31′

  3. 03

    Rule

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

    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 38308 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Ujjain, 2029: Friday 28 September.

    confidence: determinate

Say it like this

In Ujjain, Candra Ṣaṣṭhī 2029 falls on Friday 28 September. Ṣaṣṭhī runs from 09:51 on Fri 28 Sep to 12:05 on Sat 29 Sep and is current at moonrise that day.

ahargana.org/ujjain/festivals/2029/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 28 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 28 Sep
compat-drikpanchangComparison profileFri 28 Sep
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 28thCoveredMoonrise 29thCoveredRuled
Los Angeles21:21 → 23:3522:19holds23:12no27 Sep
Chicago23:21 → 01:3521:48holds22:41no28 Sep
Jersey City00:21 → 02:3521:56holds22:48no28 Sep
Port of Spain00:21 → 02:3522:16holds23:07no28 Sep
London05:21 → 07:3521:04holds21:55no28 Sep
Durban06:21 → 08:3523:14holds00:04no28 Sep
Dubai08:21 → 10:3521:43holds22:34no28 Sep
Delhi09:51 → 12:0521:34holds22:25no28 Sep
Kolkata09:51 → 12:0521:02holds21:52no28 Sep
Singapore12:21 → 14:3523:09holds23:59no28 Sep
Sydney14:21 → 16:3523:06holds23:57no28 Sep
Suva16:21 → 18:3522:36holds23:27no28 Sep
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