Ruling · Rādhāṣṭamī · 1974

Monday 23 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 460 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Monday 23 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

48 of 48 minutes covered

Midday of Tuesday 24 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

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 02:19 on Mon 23 Sep to 04:06 on Tue 24 Sep.

    1974-09-22T18:18:35Z → 1974-09-23T20:05:44Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 23rd, 11:46–12:34 on the 24th.

    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 23rd and 0 of 48 on the 24th.

    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 27621 s

  5. 05

    Ruling

    Rādhāṣṭamī, Baoding, 1974: Monday 23 September.

    confidence: determinate

Say it like this

In Baoding, Rādhāṣṭamī 1974 falls on Monday 23 September. Aṣṭamī runs from 02:19 on Mon 23 Sep to 04:06 on Tue 24 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1974/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 23 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 23 Sep
compat-drikpanchangComparison profileMon 23 Sep
No institution has a recorded ruling for Baoding.

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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles11:19 → 13:0612:2148 min12:2145 min22 Sep
Chicago13:19 → 15:0612:190 min12:1948 min23 Sep
Jersey City14:19 → 16:0612:250 min12:2448 min23 Sep
Port of Spain14:19 → 16:0611:350 min11:3448 min23 Sep
London19:19 → 21:0612:290 min12:2848 min23 Sep
Durban20:19 → 22:0611:250 min11:2548 min23 Sep
Dubai22:19 → 00:0611:470 min11:4748 min23 Sep
Delhi23:49 → 01:3611:500 min11:4948 min23 Sep
Kolkata23:49 → 01:3611:050 min11:0548 min23 Sep
Singapore01:49 → 03:3612:040 min12:0348 min23 Sep
Sydney04:19 → 06:0611:240 min11:2448 min23 Sep
Suva06:19 → 08:0611:350 min11:3548 min23 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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