Ruling · Rādhāṣṭamī · 2043

Friday 11 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 66 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 Friday 11 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

Midday of Saturday 12 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

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 07:51 on Fri 11 Sep to 10:06 on Sat 12 Sep.

    2043-09-10T23:51:22Z → 2043-09-12T02:06:26Z

  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 48 of 48 minutes on the 11th and 0 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 3937 s

  5. 05

    Ruling

    Rādhāṣṭamī, Daqing, 2043: Friday 11 September.

    confidence: determinate

Say it like this

In Daqing, Rādhāṣṭamī 2043 falls on Friday 11 September. Aṣṭamī runs from 07:51 on Fri 11 Sep to 10:06 on Sat 12 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2043/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 11 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 11 Sep
compat-drikpanchangComparison profileFri 11 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 10thCoveredMadhyāhna 12thCoveredRuled
Los Angeles16:51 → 19:0612:260 min12:250 min11 Sep
Chicago18:51 → 21:0612:230 min12:230 min11 Sep
Jersey City19:51 → 22:0612:290 min12:280 min11 Sep
Port of Spain19:51 → 22:0611:390 min11:380 min11 Sep
London00:51 → 03:0612:330 min12:320 min11 Sep
Durban01:51 → 04:0611:290 min11:280 min11 Sep
Dubai03:51 → 06:0611:520 min11:510 min11 Sep
Delhi05:21 → 07:3611:540 min11:530 min11 Sep
Kolkata05:21 → 07:3611:100 min11:090 min11 Sep
Singapore07:51 → 10:0612:380 min12:370 min11 Sep
Sydney09:51 → 12:0611:290 min11:2838 min11 Sep
Suva11:51 → 14:0611:400 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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