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Ruling · 2012 · Georgetown

Rādhāṣṭamī

Saturday 22 September2012 · Georgetown, Demerara-Mahaica, Guyana

Determinatemargin 402 min

In Georgetown, under the Rashtriya Panchang method. Clear of every threshold by 402 minutes.

Decide it forGeorgetownDelhiKolkataSingaporeSydneyJersey City6°48′ N 58°09′ W · America/Guyana · GeoNames 3378644

The two middays मध्याह्न

One ghaṭī is 24 minutes

Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Saturday 22 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:21  12:09 madhyāhna ends
10:3310:5711:2111:4512:0912:3312:57

48 of 48 minutes covered

Midday of Sunday 23 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:21  12:09 madhyāhna ends
10:3310:5711:2111:4512:0912:3312:57

0 of 48 minutes covered

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

How it was decided निर्णय

  1. Step 1, Aṅga

    Aṣṭamī runs from 04:39 on Sat 22 Sep to 02:47 on Sun 23 Sep.

    2012-09-22T08:39:03Z → 2012-09-23T06:46:54Z
  2. Step 2, Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 22nd, 11:21–12:09 on the 23rd.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
  3. Step 3, Rule

    Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103
  4. Step 4, Tie-break

    Only one midday qualifies. No tie-break is needed.

    one day qualifies → only-day · margin 24122 s
  5. Step 5, Ruling

    Rādhāṣṭamī, Georgetown, 2012: Saturday 22 September.

    confidence: determinate

Say it like this

In Georgetown, Rādhāṣṭamī 2012 falls on Saturday 22 September. Aṣṭamī runs from 04:39 on Sat 22 Sep to 02:47 on Sun 23 Sep and covers all of madhyāhna that midday.

ahargana.org/georgetown/festivals/2012/radhashtamipac-rp@2026.1

Who says what

never edited to agree

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 22 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 22 Sep
compat-drikpanchangComparison profileSat 22 Sep
No institution has a recorded ruling for Georgetown.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

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 clocks

PlaceAṣṭamīMadhyāhna 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles01:39 → 23:4712:2148 min12:210 min22 Sep
Chicago03:39 → 01:4712:1948 min12:180 min22 Sep
Jersey City04:39 → 02:4712:2448 min12:240 min22 Sep
Port of Spain04:39 → 02:4711:3548 min11:340 min22 Sep
London09:39 → 07:4712:2948 min12:280 min22 Sep
Durban10:39 → 08:4711:2548 min11:240 min22 Sep
Dubai12:39 → 10:4711:470 min11:470 min23 Sep
Delhi14:09 → 12:1711:490 min11:4928 min23 Sep
Kolkata14:09 → 12:1711:050 min11:0548 min23 Sep
Singapore16:39 → 14:4712:330 min12:3348 min23 Sep
Sydney18:39 → 16:4711:240 min11:2448 min23 Sep
Suva20:39 → 18:4711:350 min11:3548 min23 Sep
This ruling as JSON · ICS
Profile · tradition
pac-rp@2026.1 · smarta
Rule
radhashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s