Ruling · Candra Ṣaṣṭhī · 2016

Wednesday 21 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 550 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 21 September

Taken. The only moonrise Ṣaṣṭhī holds at.

20:42 moonrise
19:3019:5420:1820:4221:0621:3021:54

Holds at moonrise

Moonrise of Thursday 22 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

21:30 moonrise
20:1820:4221:0621:3021:5422:1822:42

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 11:32 on Wed 21 Sep to 08:58 on Thu 22 Sep.

    2016-09-21T03:32:15Z → 2016-09-22T00:57:31Z

  2. 02

    Kāla

    Moonrise is at 20:42 on the 21st and 21:30 on the 22nd.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is on the 21st and is not on the 22nd.

    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 33012 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Daqing, 2016: Wednesday 21 September.

    confidence: determinate

Say it like this

In Daqing, Candra Ṣaṣṭhī 2016 falls on Wednesday 21 September. Ṣaṣṭhī runs from 11:32 on Wed 21 Sep to 08:58 on Thu 22 Sep and is current at moonrise that day.

ahargana.org/daqing/festivals/2016/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 21 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 21 Sep
compat-drikpanchangComparison profileWed 21 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 21stCoveredMoonrise 22ndCoveredRuled
Los Angeles20:32 → 17:5822:56no23:49no20 Sep
Chicago22:32 → 19:5822:33no23:24no20 Sep
Jersey City23:32 → 20:5822:39no23:31no20 Sep
Port of Spain23:32 → 20:5822:36no23:32no20 Sep
London04:32 → 01:5822:04holds22:52no21 Sep
Durban05:32 → 02:5823:06holds00:07no21 Sep
Dubai07:32 → 04:5822:11holds23:05no21 Sep
Delhi09:02 → 06:2822:05holds22:58no21 Sep
Kolkata09:02 → 06:2821:28holds22:22no21 Sep
Singapore11:32 → 08:5823:20holds00:17no21 Sep
Sydney13:32 → 10:5822:51holds23:54no21 Sep
Suva15:32 → 12:5822:34holds23:34no21 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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