Ruling · Rādhāṣṭamī · 1965

Friday 3 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 169 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 Thursday 2 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:15  12:03 madhyāhna ends
10:2710:5111:1511:3912:0312:2712:51

0 of 48 minutes covered

Midday of Friday 3 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:15  12:03 madhyāhna ends
10:2710:5111:1511:3912:0312:2712:51

48 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 14:52 on Thu 2 Sep to 16:13 on Fri 3 Sep.

    1965-09-02T06:51:52Z → 1965-09-03T08:13:14Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:15–12:03 on the 2nd, 11:15–12:03 on the 3rd.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 2nd and 48 of 48 on the 3rd.

    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 10111 s

  5. 05

    Ruling

    Rādhāṣṭamī, Daqing, 1965: Friday 3 September.

    confidence: determinate

Say it like this

In Daqing, Rādhāṣṭamī 1965 falls on Friday 3 September. Aṣṭamī runs from 14:52 on Thu 2 Sep to 16:13 on Fri 3 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1965/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 3 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 3 Sep
compat-drikpanchangComparison profileFri 3 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 2ndCoveredMadhyāhna 3rdCoveredRuled
Los Angeles23:52 → 01:1312:2848 min12:280 min2 Sep
Chicago01:52 → 03:1312:2648 min12:260 min2 Sep
Jersey City02:52 → 04:1312:3248 min12:310 min2 Sep
Port of Spain02:52 → 04:1311:4248 min11:410 min2 Sep
London07:52 → 09:1312:3648 min12:350 min2 Sep
Durban08:52 → 10:1311:3248 min11:310 min2 Sep
Dubai10:52 → 12:1311:5448 min11:5419 min2 Sep
Delhi12:22 → 13:4311:5723 min11:5648 min3 Sep
Kolkata12:22 → 13:4311:120 min11:1248 min3 Sep
Singapore14:22 → 15:4312:100 min12:1048 min3 Sep
Sydney16:52 → 18:1311:310 min11:3148 min3 Sep
Suva18:52 → 20:1311:420 min11:4248 min3 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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