Ruling · Ahoyī Aṣṭamī (Ahoi Ashtami) · 1981

Monday 19 October

Boundaryin Baoding, under the Rashtriya Panchang method. Aṣṭamī 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 Monday 19 October

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

22:38 moonrise
21:2621:5022:1422:3823:0223:2623:50

Absent at moonrise

Moonrise of Tuesday 20 October

Aṣṭamī does not hold at moonrise. Not taken.

23:40 moonrise
Aṣṭamī ends 23:08:26
22:2822:5223:1623:4000:0400:2800:52

Absent at moonrise

Aṣṭamī presentMoonrise, the instant the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 00:21 on Tue 20 Oct to 23:08 on Tue 20 Oct.

    1981-10-19T16:21:14Z → 1981-10-20T15:08:27Z

  2. 02

    Kāla

    Moonrise is at 22:38 on the 19th and 23:40 on the 20th.

    moonrise: disc centre, 31′

  3. 03

    Rule

    Aṣṭamī must be current at moonrise. It is not on the 19th and is not on the 20th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

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

    priority: paraviddha → tithi-day · margin 1907 s

  5. 05

    Ruling

    Ahoyī Aṣṭamī, Baoding, 1981: Monday 19 October.

    confidence: boundary (absent-unstated)

Say it like this

In Baoding, Ahoyī Aṣṭamī (Ahoi Ashtami) 1981 falls on Monday 19 October. Aṣṭamī runs from 00:21 on Tue 20 Oct to 23:08 on Tue 20 Oct, and is current at moonrise on neither day.

ahargana.org/baoding/festivals/1981/ahoyi-ashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 19 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 19 Oct
compat-drikpanchangComparison profileMon 19 Oct
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/ahoyi-ashtami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Kṛṣṇa · Aṣṭamī
Kāla
Moonrise
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīMoonrise 19thCoveredMoonrise 20thCoveredRuled
Los Angeles09:21 → 08:0800:05holds01:07no19 Oct
Chicago11:21 → 10:0823:37holds00:41no19 Oct
Jersey City12:21 → 11:0823:44holds00:47no19 Oct
Port of Spain12:21 → 11:0823:53holds00:49no19 Oct
London17:21 → 16:0822:56holds00:03no19 Oct
Durban18:21 → 17:0800:38holds01:29no19 Oct
Dubai20:21 → 19:0823:21holds00:20no19 Oct
Delhi21:51 → 20:3823:12holds00:12no19 Oct
Kolkata21:51 → 20:3822:38holds23:37no19 Oct
Singapore23:51 → 22:3800:10holds01:06no19 Oct
Sydney02:21 → 01:0800:29no01:21no19 Oct
Suva04:21 → 03:0800:03no00:57holds20 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
ahoyi-ashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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