Ruling · Candra Ṣaṣṭhī · 1980

Monday 29 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 188 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two moonrises

One ghaṭī is 24 minutes. The moonrise is read as disc centre, 31′.

Moonrise of Sunday 28 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

21:03 moonrise
19:5120:1520:3921:0321:2721:5122:15

Absent at moonrise

Moonrise of Monday 29 September

Taken. The only moonrise Ṣaṣṭhī holds at.

21:50 moonrise
20:3821:0221:2621:5022:1422:3823:02

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 03:00 on Mon 29 Sep to 00:58 on Tue 30 Sep.

    1980-09-28T19:00:16Z → 1980-09-29T16:57:47Z

  2. 02

    Kāla

    Moonrise is at 21:03 on the 28th and 21:50 on the 29th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is not on the 28th and is on the 29th.

    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 11268 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Baoding, 1980: Monday 29 September.

    confidence: determinate

Say it like this

In Baoding, Candra Ṣaṣṭhī 1980 falls on Monday 29 September. Ṣaṣṭhī runs from 03:00 on Mon 29 Sep to 00:58 on Tue 30 Sep and is current at moonrise that day.

ahargana.org/baoding/festivals/1980/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 29 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 29 Sep
compat-drikpanchangComparison profileMon 29 Sep
No institution has a recorded ruling for Baoding.

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 28thCoveredMoonrise 29thCoveredRuled
Los Angeles12:00 → 09:5822:18holds23:08no28 Sep
Chicago14:00 → 11:5821:55holds22:43no28 Sep
Jersey City15:00 → 12:5822:01holds22:50no28 Sep
Port of Spain15:00 → 12:5821:59holds22:53no28 Sep
London20:00 → 17:5821:28holds22:10no28 Sep
Durban21:00 → 18:5822:29holds23:32no28 Sep
Dubai23:00 → 20:5821:35no22:26no28 Sep
Delhi00:30 → 22:2821:29no22:19holds29 Sep
Kolkata00:30 → 22:2820:51no21:43holds29 Sep
Singapore02:30 → 00:2822:14no23:10holds29 Sep
Sydney05:00 → 02:5822:14no23:18holds29 Sep
Suva07:00 → 04:5821:57no22:57holds29 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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