Ruling · Candra Ṣaṣṭhī · 1925

Monday 7 September

Determinatein Luanda, under the Rashtriya Panchang method. Clear of every threshold by 679 minutes.

Decide it for

8°50′ S 13°14′ E · Africa/Luanda · GeoNames 2240449

The two moonrises

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

Moonrise of Monday 7 September

Taken. The only moonrise Ṣaṣṭhī holds at.

22:28 moonrise
21:1621:4022:0422:2822:5223:1623:40

Holds at moonrise

Moonrise of Tuesday 8 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

23:19 moonrise
22:0722:3122:5523:1923:4300:0700:31

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 11:10 on Mon 7 Sep to 11:23 on Tue 8 Sep.

    1925-09-07T10:09:52Z → 1925-09-08T10:22:55Z

  2. 02

    Kāla

    Moonrise is at 22:28 on the 7th and 23:19 on the 8th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is on the 7th and is not on the 8th.

    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 40717 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Luanda, 1925: Monday 7 September.

    confidence: determinate

Say it like this

In Luanda, Candra Ṣaṣṭhī 1925 falls on Monday 7 September. Ṣaṣṭhī runs from 11:10 on Mon 7 Sep to 11:23 on Tue 8 Sep and is current at moonrise that day.

ahargana.org/luanda/festivals/1925/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 7 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 7 Sep
compat-drikpanchangComparison profileMon 7 Sep
No institution has a recorded ruling for Luanda.

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 7thCoveredMoonrise 8thCoveredRuled
Los Angeles02:10 → 02:2321:43holds22:22no7 Sep
Chicago05:10 → 05:2322:25holds23:00no7 Sep
Jersey City06:10 → 06:2322:31holds23:07no7 Sep
Port of Spain06:10 → 06:2322:18holds23:03no7 Sep
London11:10 → 11:2322:07holds22:35no7 Sep
Durban12:10 → 12:2322:38holds23:35no7 Sep
Dubai14:10 → 14:2322:02holds22:42no7 Sep
Delhi15:40 → 15:5321:57holds22:37no7 Sep
Kolkata15:40 → 15:5321:18holds22:00no7 Sep
Singapore17:10 → 17:2322:04holds22:52no7 Sep
Sydney20:10 → 20:2322:23holds23:22no7 Sep
Suva22:10 → 22:2322:13holds23:06no7 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

About Ahargaṇa