Ruling · Rādhāṣṭamī · 1929

Tuesday 10 September

Determinatein Lima, under the Rashtriya Panchang method. Clear of every threshold by 273 minutes.

Decide it for

LimaDelhiKolkataSingaporeSydneyJersey City

12°03′ S 77°02′ W · America/Lima · GeoNames 3936456

The two middays

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

Midday of Tuesday 10 September

Taken. The only midday Aṣṭamī reaches.

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

48 of 48 minutes covered

Midday of Wednesday 11 September

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 04:51 on Tue 10 Sep to 07:08 on Wed 11 Sep.

    1929-09-10T09:51:03Z → 1929-09-11T12:07:45Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 10th, 11:41–12:29 on the 11th.

    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 10th and 0 of 48 on the 11th.

    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 16385 s

  5. 05

    Ruling

    Rādhāṣṭamī, Lima, 1929: Tuesday 10 September.

    confidence: determinate

Say it like this

In Lima, Rādhāṣṭamī 1929 falls on Tuesday 10 September. Aṣṭamī runs from 04:51 on Tue 10 Sep to 07:08 on Wed 11 Sep and covers all of madhyāhna that midday.

ahargana.org/lima/festivals/1929/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 10 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 10 Sep
compat-drikpanchangComparison profileTue 10 Sep
No institution has a recorded ruling for Lima.

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 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles01:51 → 04:0811:2648 min11:250 min10 Sep
Chicago04:51 → 07:0812:2348 min12:230 min10 Sep
Jersey City05:51 → 08:0812:2948 min12:290 min10 Sep
Port of Spain05:51 → 08:0811:3948 min11:390 min10 Sep
London10:51 → 13:0812:3348 min12:3335 min10 Sep
Durban11:51 → 14:0811:2926 min11:2948 min11 Sep
Dubai13:51 → 16:0811:520 min11:5148 min11 Sep
Delhi15:21 → 17:3811:540 min11:5448 min11 Sep
Kolkata15:21 → 17:3811:100 min11:0948 min11 Sep
Singapore16:51 → 19:0811:380 min11:3748 min11 Sep
Sydney19:51 → 22:0811:290 min11:2848 min11 Sep
Suva21:51 → 00:0811:400 min11:3948 min11 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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