Ruling · Candra Ṣaṣṭhī · 1937

Saturday 25 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 514 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 24 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

19:28 moonrise
18:1618:4019:0419:2819:5220:1620:40

Absent at moonrise

Moonrise of Saturday 25 September

Taken. The only moonrise Ṣaṣṭhī holds at.

20:18 moonrise
19:0619:3019:5420:1820:4221:0621:30

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 07:13 on Sat 25 Sep to 04:52 on Sun 26 Sep.

    1937-09-24T23:13:20Z → 1937-09-25T20:51:53Z

  2. 02

    Kāla

    Moonrise is at 19:28 on the 24th and 20:18 on the 25th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is not on the 24th and is on the 25th.

    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 30821 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Daqing, 1937: Saturday 25 September.

    confidence: determinate

Say it like this

In Daqing, Candra Ṣaṣṭhī 1937 falls on Saturday 25 September. Ṣaṣṭhī runs from 07:13 on Sat 25 Sep to 04:52 on Sun 26 Sep and is current at moonrise that day.

ahargana.org/daqing/festivals/1937/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 25 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 25 Sep
compat-drikpanchangComparison profileSat 25 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 24thCoveredMoonrise 25thCoveredRuled
Los Angeles15:13 → 12:5220:51holds21:49no24 Sep
Chicago18:13 → 15:5221:23holds22:19no24 Sep
Jersey City19:13 → 16:5221:30holds22:26no24 Sep
Port of Spain19:13 → 16:5221:41holds22:40no24 Sep
London00:13 → 21:5220:45no21:37holds25 Sep
Durban01:13 → 22:5222:26no23:29no24 Sep
Dubai03:13 → 00:5221:10no22:06holds25 Sep
Delhi04:43 → 02:2221:02no21:57holds25 Sep
Kolkata04:43 → 02:2220:27no21:24holds25 Sep
Singapore06:33 → 04:1221:47no22:47holds25 Sep
Sydney09:13 → 06:5222:12no23:17holds25 Sep
Suva11:13 → 08:5221:47no22:50holds25 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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