Ruling · Rādhāṣṭamī · 1960

Monday 29 August

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 6 min 16 s.

Decide it for

TehranDelhiKolkataSingaporeSydneyJersey City

35°42′ N 51°25′ E · Asia/Tehran · GeoNames 112931

The two middays

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

Midday of Monday 29 August

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:41  12:29 madhyāhna ends
Aṣṭamī begins 11:47:11
10:5311:1711:4112:0512:2912:5313:17

42 of 48 minutes covered, the last 42

Midday of Tuesday 30 August

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:41  12:29 madhyāhna ends
10:5311:1711:4112:0512:2912:5313:17

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 11:47 on Mon 29 Aug to 09:51 on Tue 30 Aug.

    1960-08-29T08:17:11Z → 1960-08-30T06:21:07Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 29th, 11:41–12:29 on the 30th.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 42 of 48 minutes on the 29th and 0 of 48 on the 30th.

    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 376 s

  5. 05

    Ruling

    Rādhāṣṭamī, Tehran, 1960: Monday 29 August.

    confidence: determinate

Say it like this

In Tehran, Rādhāṣṭamī 1960 falls on Monday 29 August. Aṣṭamī runs from 11:47 on Mon 29 Aug to 09:51 on Tue 30 Aug and covers 42 of 48 minutes of madhyāhna that midday.

ahargana.org/tehran/festivals/1960/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 29 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 29 Aug
compat-drikpanchangComparison profileMon 29 Aug
No institution has a recorded ruling for Tehran.

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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles01:17 → 23:2112:2948 min12:290 min29 Aug
Chicago03:17 → 01:2112:2748 min12:270 min29 Aug
Jersey City04:17 → 02:2112:3348 min12:320 min29 Aug
Port of Spain04:17 → 02:2111:4348 min11:420 min29 Aug
London09:17 → 07:2112:3748 min12:370 min29 Aug
Durban10:17 → 08:2111:3348 min11:330 min29 Aug
Dubai12:17 → 10:2111:5526 min11:550 min29 Aug
Delhi13:47 → 11:5111:580 min11:570 min30 Aug
Kolkata13:47 → 11:5111:130 min11:1338 min30 Aug
Singapore15:47 → 13:5112:120 min12:1148 min30 Aug
Sydney18:17 → 16:2111:320 min11:3248 min30 Aug
Suva20:17 → 18:2111:430 min11:4348 min30 Aug
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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