Ruling · Candra Ṣaṣṭhī · 2001

Saturday 8 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 357 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 Saturday 8 September

Taken. The only moonrise Ṣaṣṭhī holds at.

20:40 moonrise
19:2819:5220:1620:4021:0421:2821:52

Holds at moonrise

Moonrise of Sunday 9 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

21:09 moonrise
19:5720:2120:4521:0921:3321:5722:21

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 14:36 on Sat 8 Sep to 15:12 on Sun 9 Sep.

    2001-09-08T06:35:48Z → 2001-09-09T07:12:16Z

  2. 02

    Kāla

    Moonrise is at 20:40 on the 8th and 21:09 on the 9th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is on the 8th and is not on the 9th.

    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 21421 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Daqing, 2001: Saturday 8 September.

    confidence: determinate

Say it like this

In Daqing, Candra Ṣaṣṭhī 2001 falls on Saturday 8 September. Ṣaṣṭhī runs from 14:36 on Sat 8 Sep to 15:12 on Sun 9 Sep and is current at moonrise that day.

ahargana.org/daqing/festivals/2001/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 8 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 8 Sep
compat-drikpanchangComparison profileSat 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 8thCoveredMoonrise 9thCoveredRuled
Los Angeles23:36 → 00:1222:40holds23:20no8 Sep
Chicago01:36 → 02:1222:19holds22:54no8 Sep
Jersey City02:36 → 03:1222:26holds23:02no8 Sep
Port of Spain02:36 → 03:1222:20holds23:08no8 Sep
London07:36 → 08:1221:57holds22:24no8 Sep
Durban08:36 → 09:1222:49holds23:48no8 Sep
Dubai10:36 → 11:1222:01holds22:42no8 Sep
Delhi12:06 → 12:4221:56holds22:36no8 Sep
Kolkata12:06 → 12:4221:19holds22:00no8 Sep
Singapore14:36 → 15:1223:09holds23:57no8 Sep
Sydney16:36 → 17:1222:35holds23:35no8 Sep
Suva18:36 → 19:1222:21holds23:15no8 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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