September 1997 · each Moon as it stands at sunriseŚrāvaṇa Kṛṣṇa to Bhādrapada KṛṣṇaThe month ›

Ruling · 1997 · Doha

Rādhāṣṭamī

Wednesday 10 September1997 · Doha, Baladiyat ad Dawhah, Qatar

Determinatemargin 266 min

In Doha, under the Rashtriya Panchang method. Clear of every threshold by 266 minutes.

Decide it forDohaDelhiKolkataSingaporeSydneyJersey City25°17′ N 51°32′ E · Asia/Qatar · GeoNames 290030

The two middays मध्याह्न

One ghaṭī is 24 minutes

Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Tuesday 9 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:07  11:55 madhyāhna ends
10:1910:4311:0711:3111:5512:1912:43

0 of 48 minutes covered

Midday of Wednesday 10 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:07  11:55 madhyāhna ends
10:1910:4311:0711:3111:5512:1912:43

48 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 16:30 on Tue 9 Sep to 16:21 on Wed 10 Sep.

    1997-09-09T13:29:43Z → 1997-09-10T13:21:07Z
  2. Step 2, Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 9th, 11:07–11:55 on the 10th.

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

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.

    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 15987 s
  5. Step 5, Ruling

    Rādhāṣṭamī, Doha, 1997: Wednesday 10 September.

    confidence: determinate

Say it like this

In Doha, Rādhāṣṭamī 1997 falls on Wednesday 10 September. Aṣṭamī runs from 16:30 on Tue 9 Sep to 16:21 on Wed 10 Sep and covers all of madhyāhna that midday.

ahargana.org/doha/festivals/1997/radhashtamipac-rp@2026.1

Who says what

never edited to agree

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 10 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 10 Sep
compat-drikpanchangComparison profileWed 10 Sep
No institution has a recorded ruling for Doha.

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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles06:30 → 06:2112:2648 min12:260 min9 Sep
Chicago08:30 → 08:2112:2348 min12:230 min9 Sep
Jersey City09:30 → 09:2112:2948 min12:290 min9 Sep
Port of Spain09:30 → 09:2111:3948 min11:390 min9 Sep
London14:30 → 14:2112:330 min12:3348 min10 Sep
Durban15:30 → 15:2111:290 min11:2948 min10 Sep
Dubai17:30 → 17:2111:520 min11:5248 min10 Sep
Delhi19:00 → 18:5111:540 min11:5448 min10 Sep
Kolkata19:00 → 18:5111:100 min11:0948 min10 Sep
Singapore21:30 → 21:2112:380 min12:3848 min10 Sep
Sydney23:30 → 23:2111:290 min11:2848 min10 Sep
Suva01:30 → 01:2111:400 min11:4048 min10 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