Ruling · Candra Ṣaṣṭhī · 2008

Saturday 20 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 518 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 Friday 19 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

19:09 moonrise
17:5718:2118:4519:0919:3319:5720:21

Absent at moonrise

Moonrise of Saturday 20 September

Taken. The only moonrise Ṣaṣṭhī holds at.

19:49 moonrise
18:3719:0119:2519:4920:1320:3721:01

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 06:51 on Sat 20 Sep to 04:27 on Sun 21 Sep.

    2008-09-19T22:51:00Z → 2008-09-20T20:27:15Z

  2. 02

    Kāla

    Moonrise is at 19:09 on the 19th and 19:49 on the 20th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is not on the 19th and is on the 20th.

    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 31085 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Daqing, 2008: Saturday 20 September.

    confidence: determinate

Say it like this

In Daqing, Candra Ṣaṣṭhī 2008 falls on Saturday 20 September. Ṣaṣṭhī runs from 06:51 on Sat 20 Sep to 04:27 on Sun 21 Sep and is current at moonrise that day.

ahargana.org/daqing/festivals/2008/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 20 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 20 Sep
compat-drikpanchangComparison profileSat 20 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 19thCoveredMoonrise 20thCoveredRuled
Los Angeles15:51 → 13:2721:33holds22:28no19 Sep
Chicago17:51 → 15:2721:01holds21:52no19 Sep
Jersey City18:51 → 16:2721:09holds22:00no19 Sep
Port of Spain18:51 → 16:2721:33holds22:32no19 Sep
London23:51 → 21:2720:18no20:58holds20 Sep
Durban00:51 → 22:2722:31no23:40no19 Sep
Dubai02:51 → 00:2720:58no21:52holds20 Sep
Delhi04:21 → 01:5720:49no21:41holds20 Sep
Kolkata04:21 → 01:5720:17no21:11holds20 Sep
Singapore06:51 → 04:2722:23no23:23holds20 Sep
Sydney08:51 → 06:2722:17no23:29holds20 Sep
Suva10:51 → 08:2721:48no22:53holds20 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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