Ruling · Candra Ṣaṣṭhī · 2019

Friday 20 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 98 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 Thursday 19 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

20:19 moonrise
19:0719:3119:5520:1920:4321:0721:31

Absent at moonrise

Moonrise of Friday 20 September

Taken. The only moonrise Ṣaṣṭhī holds at.

20:51 moonrise
19:3920:0320:2720:5121:1521:3922:03

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 21:57 on Thu 19 Sep to 22:42 on Fri 20 Sep.

    2019-09-19T13:56:40Z → 2019-09-20T14:41:38Z

  2. 02

    Kāla

    Moonrise is at 20:19 on the 19th and 20:51 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 5880 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Daqing, 2019: Friday 20 September.

    confidence: determinate

Say it like this

In Daqing, Candra Ṣaṣṭhī 2019 falls on Friday 20 September. Ṣaṣṭhī runs from 21:57 on Thu 19 Sep to 22:42 on Fri 20 Sep and is current at moonrise that day.

ahargana.org/daqing/festivals/2019/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 20 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 20 Sep
compat-drikpanchangComparison profileFri 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 Angeles06:57 → 07:4222:22holds23:04no19 Sep
Chicago08:57 → 09:4222:00holds22:38no19 Sep
Jersey City09:57 → 10:4222:07holds22:45no19 Sep
Port of Spain09:57 → 10:4222:05holds22:53no19 Sep
London14:57 → 15:4221:35holds22:06no19 Sep
Durban15:57 → 16:4222:37holds23:35no19 Sep
Dubai17:57 → 18:4221:44holds22:26no19 Sep
Delhi19:27 → 20:1221:38holds22:19no19 Sep
Kolkata19:27 → 20:1221:01holds21:44no19 Sep
Singapore21:57 → 22:4222:54holds23:42no19 Sep
Sydney23:57 → 00:4222:24no23:23holds20 Sep
Suva01:57 → 02:4222:08no23:02holds20 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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