Ruling · Candra Ṣaṣṭhī · 2039

Thursday 8 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 456 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two moonrises

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

Moonrise of Wednesday 7 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

20:22 moonrise
19:1019:3419:5820:2220:4621:1021:34

Absent at moonrise

Moonrise of Thursday 8 September

Taken. The only moonrise Ṣaṣṭhī holds at.

20:46 moonrise
19:3419:5820:2220:4621:1021:3421:58

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 03:58 on Thu 8 Sep to 06:01 on Fri 9 Sep.

    2039-09-07T19:57:48Z → 2039-09-08T22:01:04Z

  2. 02

    Kāla

    Moonrise is at 20:22 on the 7th and 20:46 on the 8th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is not on the 7th and is 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 27340 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Daqing, 2039: Thursday 8 September.

    confidence: determinate

Say it like this

In Daqing, Candra Ṣaṣṭhī 2039 falls on Thursday 8 September. Ṣaṣṭhī runs from 03:58 on Thu 8 Sep to 06:01 on Fri 9 Sep and is current at moonrise that day.

ahargana.org/daqing/festivals/2039/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 8 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 8 Sep
compat-drikpanchangComparison profileThu 8 Sep
No institution has a recorded ruling for Daqing.

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 Angeles12:58 → 15:0122:15holds22:49no7 Sep
Chicago14:58 → 17:0121:56holds22:25no7 Sep
Jersey City15:58 → 18:0122:03holds22:33no7 Sep
Port of Spain15:58 → 18:0121:54holds22:35no7 Sep
London20:58 → 23:0121:39holds21:59holds7 Sep
Durban21:58 → 00:0122:18holds23:13holds7 Sep
Dubai23:58 → 02:0121:38no22:13holds8 Sep
Delhi01:28 → 03:3121:34no22:08holds8 Sep
Kolkata01:28 → 03:3120:55no21:32holds8 Sep
Singapore03:58 → 06:0122:42no23:26holds8 Sep
Sydney05:58 → 08:0122:03no23:01holds8 Sep
Suva07:58 → 10:0121:53no22:43holds8 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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