Ruling · Rādhāṣṭamī · 2009

Thursday 27 August

Boundaryin Suva, under the Rashtriya Panchang method. Both middays qualify and the rule does not say which to take. Say “contested”.

Decide it for

SuvaDelhiKolkataSingaporeSydneyJersey City

18°08′ S 178°26′ E · Pacific/Fiji · GeoNames 2198148

The two middays

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

Midday of Thursday 27 August

Taken. Both middays qualify; the rule is silent, and this one is covered longer.

madhyāhna begins 11:44  12:32 madhyāhna ends
Aṣṭamī begins 11:06:03
10:5611:2011:4412:0812:3212:5613:20

48 of 48 minutes covered

Midday of Friday 28 August

Qualifies with 45 of 48 minutes. Not taken.

madhyāhna begins 11:44  12:32 madhyāhna ends
Aṣṭamī ends 12:28:17
10:5611:2011:4412:0812:3212:5613:20

45 of 48 minutes covered, the first 45

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 11:06 on Thu 27 Aug to 12:28 on Fri 28 Aug.

    2009-08-26T23:06:03Z → 2009-08-28T00:28:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 27th, 11:44–12:32 on the 28th.

    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 27th and 45 of 48 on the 28th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 208 s < 300 s

  5. 05

    Ruling

    Rādhāṣṭamī, Suva, 2009: Thursday 27 August.

    confidence: boundary (margin, tie-break-unstated)

Say it like this

In Suva, Rādhāṣṭamī 2009 falls on Thursday 27 August. Aṣṭamī runs from 11:06 on Thu 27 Aug to 12:28 on Fri 28 Aug and covers all of madhyāhna that midday. It also reaches the next midday for 45 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 3 min 28 s from a threshold: treat the date as contested.

ahargana.org/suva/festivals/2009/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 27 Aug
Ahargaṇa, classicalDisc centre, no refractionThu 27 Aug
compat-drikpanchangComparison profileThu 27 Aug
No institution has a recorded ruling for Suva.

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 26thCoveredMadhyāhna 28thCoveredRuled
Los Angeles16:06 → 17:2812:300 min12:300 min27 Aug
Chicago18:06 → 19:2812:280 min12:270 min27 Aug
Jersey City19:06 → 20:2812:340 min12:330 min27 Aug
Port of Spain19:06 → 20:2811:440 min11:430 min27 Aug
London00:06 → 01:2812:380 min12:370 min27 Aug
Durban01:06 → 02:2811:340 min11:330 min27 Aug
Dubai03:06 → 04:2811:560 min11:560 min27 Aug
Delhi04:36 → 05:5811:590 min11:580 min27 Aug
Kolkata04:36 → 05:5811:140 min11:140 min27 Aug
Singapore07:06 → 08:2812:420 min12:420 min27 Aug
Sydney09:06 → 10:2811:330 min11:330 min27 Aug
Suva11:06 → 12:2811:440 min11:4445 min27 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

About Ahargaṇa