Ruling · Candra Ṣaṣṭhī · 1998

Friday 11 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 229 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 10 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

20:28 moonrise
19:1619:4020:0420:2820:5221:1621:40

Absent at moonrise

Moonrise of Friday 11 September

Taken. The only moonrise Ṣaṣṭhī holds at.

21:07 moonrise
19:5520:1920:4321:0721:3121:5522:19

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 03:30 on Fri 11 Sep to 00:56 on Sat 12 Sep.

    1998-09-10T19:30:00Z → 1998-09-11T16:55:45Z

  2. 02

    Kāla

    Moonrise is at 20:28 on the 10th and 21:07 on the 11th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is not on the 10th and is on the 11th.

    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 13727 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Daqing, 1998: Friday 11 September.

    confidence: determinate

Say it like this

In Daqing, Candra Ṣaṣṭhī 1998 falls on Friday 11 September. Ṣaṣṭhī runs from 03:30 on Fri 11 Sep to 00:56 on Sat 12 Sep and is current at moonrise that day.

ahargana.org/daqing/festivals/1998/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 11 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 11 Sep
compat-drikpanchangComparison profileFri 11 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 10thCoveredMoonrise 11thCoveredRuled
Los Angeles12:30 → 09:5622:29holds23:16no10 Sep
Chicago14:30 → 11:5622:10holds22:54no10 Sep
Jersey City15:30 → 12:5622:16holds23:00no10 Sep
Port of Spain15:30 → 12:5622:02holds22:55no10 Sep
London20:30 → 17:5621:51holds22:28no10 Sep
Durban21:30 → 18:5622:18holds23:22no10 Sep
Dubai23:30 → 20:5621:43no22:32no10 Sep
Delhi01:00 → 22:2621:39no22:26no10 Sep
Kolkata01:00 → 22:2620:59no21:48holds11 Sep
Singapore03:30 → 00:5622:44no23:39holds11 Sep
Sydney05:30 → 02:5622:00no23:06holds11 Sep
Suva07:30 → 04:5621:50no22:51holds11 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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