Ruling · Rādhāṣṭamī · 2065

Monday 7 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 200 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Monday 7 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:14  12:02 madhyāhna ends
10:2610:5011:1411:3812:0212:2612:50

48 of 48 minutes covered

Midday of Tuesday 8 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

0 of 48 minutes covered

Aṣṭamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 07:54 on Mon 7 Sep to 05:50 on Tue 8 Sep.

    2065-09-06T23:54:01Z → 2065-09-07T21:50:08Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 7th, 11:13–12:01 on the 8th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.

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

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 11980 s

  5. 05

    Ruling

    Rādhāṣṭamī, Daqing, 2065: Monday 7 September.

    confidence: determinate

Say it like this

In Daqing, Rādhāṣṭamī 2065 falls on Monday 7 September. Aṣṭamī runs from 07:54 on Mon 7 Sep to 05:50 on Tue 8 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2065/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 7 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 7 Sep
compat-drikpanchangComparison profileMon 7 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/radhashtami · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Aṣṭamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“S 8 Durvastami (purvaviddha — S 8 of saura Bhadra except Bengal), Mahalaksmi vratarambha, Radhastami (madhyahna vyapini)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīMadhyāhna 6thCoveredMadhyāhna 7thCoveredRuled
Los Angeles16:54 → 14:5012:270 min12:2748 min7 Sep
Chicago18:54 → 16:5012:240 min12:2448 min7 Sep
Jersey City19:54 → 17:5012:300 min12:3048 min7 Sep
Port of Spain19:54 → 17:5011:400 min11:4048 min7 Sep
London00:54 → 22:5012:340 min12:3448 min7 Sep
Durban01:54 → 23:5011:300 min11:3048 min7 Sep
Dubai03:54 → 01:5011:530 min11:5348 min7 Sep
Delhi05:24 → 03:2011:550 min11:5548 min7 Sep
Kolkata05:24 → 03:2011:110 min11:1048 min7 Sep
Singapore07:54 → 05:5012:390 min12:3948 min7 Sep
Sydney09:54 → 07:5011:300 min11:3048 min7 Sep
Suva11:54 → 09:5011:410 min11:4135 min7 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
radhashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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