Ruling · Rādhāṣṭamī · 1956

Wednesday 12 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 441 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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 Tuesday 11 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:12  12:00 madhyāhna ends
10:2410:4811:1211:3612:0012:2412:48

0 of 48 minutes covered

Midday of Wednesday 12 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:12  12:00 madhyāhna ends
10:2410:4811:1211:3612:0012:2412:48

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 19:21 on Tue 11 Sep to 21:13 on Wed 12 Sep.

    1956-09-11T11:21:02Z → 1956-09-12T13:12:52Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 11th, 11:12–12:00 on the 12th.

    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 11th and 48 of 48 on the 12th.

    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 26446 s

  5. 05

    Ruling

    Rādhāṣṭamī, Daqing, 1956: Wednesday 12 September.

    confidence: determinate

Say it like this

In Daqing, Rādhāṣṭamī 1956 falls on Wednesday 12 September. Aṣṭamī runs from 19:21 on Tue 11 Sep to 21:13 on Wed 12 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1956/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 12 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 12 Sep
compat-drikpanchangComparison profileWed 12 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles04:21 → 06:1312:2548 min12:250 min11 Sep
Chicago06:21 → 08:1312:2348 min12:220 min11 Sep
Jersey City07:21 → 09:1312:2848 min12:280 min11 Sep
Port of Spain07:21 → 09:1311:3948 min11:380 min11 Sep
London12:21 → 14:1312:3348 min12:3248 min11 Sep
Durban13:21 → 15:1311:290 min11:2848 min12 Sep
Dubai15:21 → 17:1311:510 min11:5148 min12 Sep
Delhi16:51 → 18:4311:540 min11:5348 min12 Sep
Kolkata16:51 → 18:4311:090 min11:0948 min12 Sep
Singapore18:51 → 20:4312:070 min12:0748 min12 Sep
Sydney21:21 → 23:1311:280 min11:2848 min12 Sep
Suva23:21 → 01:1311:390 min11:3948 min12 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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