Ruling · Candra Ṣaṣṭhī · 1910

Friday 23 September

Boundaryin Baoding, under the Rashtriya Panchang method. Ṣaṣṭhī reaches moonrise on neither day and the rule does not say what then. Say “contested”.

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 Friday 23 September

Taken. Ṣaṣṭhī reaches neither moonrise; this is the day it falls on.

20:50 moonrise
19:3820:0220:2620:5021:1421:3822:02

Absent at moonrise

Moonrise of Saturday 24 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

21:33 moonrise
20:2120:4521:0921:3321:5722:2122:45

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 22:15 on Fri 23 Sep to 19:50 on Sat 24 Sep.

    1910-09-23T14:14:51Z → 1910-09-24T11:49:49Z

  2. 02

    Kāla

    Moonrise is at 20:50 on the 23rd and 21:33 on the 24th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is not on the 23rd and is not on the 24th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Neither moonrise qualifies. The day the tithi falls on is taken.

    priority: purvaviddha → tithi-day · margin 5099 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Baoding, 1910: Friday 23 September.

    confidence: boundary (absent-unstated)

Say it like this

In Baoding, Candra Ṣaṣṭhī 1910 falls on Friday 23 September. Ṣaṣṭhī runs from 22:15 on Fri 23 Sep to 19:50 on Sat 24 Sep, and is current at moonrise on neither day.

ahargana.org/baoding/festivals/1910/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 23 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 23 Sep
compat-drikpanchangComparison profileFri 23 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 23rdCoveredMoonrise 24thCoveredRuled
Los Angeles06:15 → 03:5021:05holds21:55no23 Sep
Chicago08:15 → 05:5020:36holds21:22no23 Sep
Jersey City09:15 → 06:5020:44holds21:30no23 Sep
Port of Spain10:15 → 07:5022:00holds22:57no23 Sep
London14:15 → 11:5019:59holds20:34no23 Sep
Durban16:15 → 13:5022:50holds23:59no23 Sep
Dubai17:56 → 15:3121:10holds22:01no23 Sep
Delhi19:45 → 17:2021:21holds22:10no23 Sep
Kolkata19:45 → 17:2020:47holds21:38no23 Sep
Singapore21:15 → 18:5021:49holds22:47no23 Sep
Sydney00:15 → 21:5022:35no23:47no23 Sep
Suva02:10 → 23:4522:05no23:09holds24 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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