Ruling · Candra Ṣaṣṭhī · 2016

Tuesday 20 September

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

Decide it for

12°03′ S 77°02′ W · America/Lima · GeoNames 3936456

The two moonrises

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

Moonrise of Tuesday 20 September

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

22:11 moonrise
Ṣaṣṭhī begins 22:32:14
20:5921:2321:4722:1122:3522:5923:23

Absent at moonrise

Moonrise of Wednesday 21 September

Ṣaṣṭhī does not hold at moonrise. Not taken.

23:10 moonrise
21:5822:2222:4623:1023:3423:5800:22

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 22:32 on Tue 20 Sep to 19:58 on Wed 21 Sep.

    2016-09-21T03:32:15Z → 2016-09-22T00:57:31Z

  2. 02

    Kāla

    Moonrise is at 22:11 on the 20th and 23:10 on the 21st.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Ṣaṣṭhī must be current at moonrise. It is not on the 20th and is not on the 21st.

    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 1303 s

  5. 05

    Ruling

    Candra Ṣaṣṭhī, Lima, 2016: Tuesday 20 September.

    confidence: boundary (absent-unstated)

Say it like this

In Lima, Candra Ṣaṣṭhī 2016 falls on Tuesday 20 September. Ṣaṣṭhī runs from 22:32 on Tue 20 Sep to 19:58 on Wed 21 Sep, and is current at moonrise on neither day.

ahargana.org/lima/festivals/2016/chandra-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 20 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 20 Sep
compat-drikpanchangComparison profileTue 20 Sep
No institution has a recorded ruling for Lima.

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 21stCoveredMoonrise 22ndCoveredRuled
Los Angeles20:32 → 17:5822:56no23:49no20 Sep
Chicago22:32 → 19:5822:33no23:24no20 Sep
Jersey City23:32 → 20:5822:39no23:31no20 Sep
Port of Spain23:32 → 20:5822:36no23:32no20 Sep
London04:32 → 01:5822:04holds22:52no21 Sep
Durban05:32 → 02:5823:06holds00:07no21 Sep
Dubai07:32 → 04:5822:11holds23:05no21 Sep
Delhi09:02 → 06:2822:05holds22:58no21 Sep
Kolkata09:02 → 06:2821:28holds22:22no21 Sep
Singapore11:32 → 08:5823:20holds00:17no21 Sep
Sydney13:32 → 10:5822:51holds23:54no21 Sep
Suva15:32 → 12:5822:34holds23:34no21 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

About Ahargaṇa