Ruling · Rādhāṣṭamī · 2008

Sunday 7 September

Determinatein Cairo, under the Rashtriya Panchang method. Clear of every threshold by 371 minutes.

Decide it for

30°04′ N 31°15′ E · Africa/Cairo · GeoNames 360630

The two middays

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

Midday of Sunday 7 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:29  12:17 madhyāhna ends
10:4111:0511:2911:5312:1712:4113:05

48 of 48 minutes covered

Midday of Monday 8 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:28  12:16 madhyāhna ends
10:4011:0411:2811:5212:1612:4013:04

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 02:52 on Sun 7 Sep to 05:17 on Mon 8 Sep.

    2008-09-07T00:51:47Z → 2008-09-08T03:17:13Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 7th, 11:28–12:16 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 22267 s

  5. 05

    Ruling

    Rādhāṣṭamī, Cairo, 2008: Sunday 7 September.

    confidence: determinate

Say it like this

In Cairo, Rādhāṣṭamī 2008 falls on Sunday 7 September. Aṣṭamī runs from 02:52 on Sun 7 Sep to 05:17 on Mon 8 Sep and covers all of madhyāhna that midday.

ahargana.org/cairo/festivals/2008/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 7 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 7 Sep
compat-drikpanchangComparison profileSun 7 Sep
No institution has a recorded ruling for Cairo.

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 7thCoveredMadhyāhna 8thCoveredRuled
Los Angeles17:52 → 20:1712:2648 min12:260 min7 Sep
Chicago19:52 → 22:1712:2448 min12:240 min7 Sep
Jersey City20:52 → 23:1712:3048 min12:290 min7 Sep
Port of Spain20:52 → 23:1711:4048 min11:390 min7 Sep
London01:52 → 04:1712:3448 min12:340 min7 Sep
Durban02:52 → 05:1711:3048 min11:300 min7 Sep
Dubai04:52 → 07:1711:5348 min11:520 min7 Sep
Delhi06:22 → 08:4711:5548 min11:540 min7 Sep
Kolkata06:22 → 08:4711:1048 min11:100 min7 Sep
Singapore08:52 → 11:1712:3948 min12:380 min7 Sep
Sydney10:52 → 13:1711:2948 min11:2948 min7 Sep
Suva12:52 → 15:1711:400 min11:4048 min8 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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