Ruling · Candra Ṣaṣṭhī · 1921

Thursday 22 September

Boundaryin Suva, under the Rashtriya Panchang method. Ṣaṣṭhī reaches moonrise on neither day and the rule does not say what then. Say “contested”.

Decide it for

18°08′ S 178°26′ E · Pacific/Fiji · GeoNames 2198148

The two moonrises

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

Moonrise of Thursday 22 September

Taken. Ṣaṣṭhī reaches neither moonrise; this is the day it falls on.

22:14 moonrise
21:0221:2621:5022:1422:3823:0223:26

Absent at moonrise

Moonrise of Friday 23 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

23:10 moonrise
Ṣaṣṭhī ends 23:08:33
21:5822:2222:4623:1023:3423:5800:22

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 23:42 on Thu 22 Sep to 23:09 on Fri 23 Sep.

    1921-09-22T11:42:15Z → 1921-09-23T11:08:34Z

  2. 02

    Kāla

    Moonrise is at 22:14 on the 22nd and 23:10 on the 23rd.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is not on the 22nd and is not on the 23rd.

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

  4. 04

    Tie-break

    Neither moonrise qualifies. The day the tithi falls on is taken.

    priority: purvaviddha → tithi-day · margin 60 s < 300 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Suva, 1921: Thursday 22 September.

    confidence: boundary (margin, absent-unstated)

Say it like this

In Suva, Candra Ṣaṣṭhī 1921 falls on Thursday 22 September. Ṣaṣṭhī runs from 23:42 on Thu 22 Sep to 23:09 on Fri 23 Sep, and is current at moonrise on neither day. It is 1 min 00 s from a threshold: treat the date as contested.

ahargana.org/suva/festivals/1921/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 22 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 22 Sep
compat-drikpanchangComparison profileThu 22 Sep
No institution has a recorded ruling for Suva.

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 22ndCoveredMoonrise 23rdCoveredRuled
Los Angeles03:42 → 03:0921:30holds22:22no22 Sep
Chicago06:42 → 06:0922:07holds22:57no22 Sep
Jersey City07:42 → 07:0922:13holds23:04no22 Sep
Port of Spain07:42 → 07:0922:12holds23:05no22 Sep
London12:42 → 12:0921:38holds22:25no22 Sep
Durban13:42 → 13:0922:45holds23:42no22 Sep
Dubai15:42 → 15:0921:47holds22:39no22 Sep
Delhi17:12 → 16:3921:41holds22:31no22 Sep
Kolkata17:12 → 16:3921:04holds21:56no22 Sep
Singapore18:42 → 18:0921:58holds22:52no22 Sep
Sydney21:42 → 21:0922:32holds23:30no22 Sep
Suva23:42 → 23:0922:14no23:10no22 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

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