Ruling · Rādhāṣṭamī · 1972

Friday 15 September

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

Decide it for

30°12′ N 71°29′ E · Asia/Karachi · GeoNames 1169825

The two middays

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

Midday of Friday 15 September

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

madhyāhna begins 11:45  12:33 madhyāhna ends
Aṣṭamī begins 11:05:07
10:5711:2111:4512:0912:3312:5713:21

48 of 48 minutes covered

Midday of Saturday 16 September

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:45  12:33 madhyāhna ends
Aṣṭamī ends 13:14:33
10:5711:2111:4512:0912:3312:5713:21

48 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 11:05 on Fri 15 Sep to 13:15 on Sat 16 Sep.

    1972-09-15T06:05:07Z → 1972-09-16T08:14:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 15th, 11:45–12:33 on the 16th.

    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 15th and 48 of 48 on the 16th.

    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 2396 s

  5. 05

    Ruling

    Rādhāṣṭamī, Multan, 1972: Friday 15 September.

    confidence: boundary (tie-break-unstated)

Say it like this

In Multan, Rādhāṣṭamī 1972 falls on Friday 15 September. Aṣṭamī runs from 11:05 on Fri 15 Sep to 13:15 on Sat 16 Sep and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/multan/festivals/1972/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 15 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 15 Sep
compat-drikpanchangComparison profileSat 16 Sep
No institution has a recorded ruling for Multan.

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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles23:05 → 01:1512:2448 min12:230 min15 Sep
Chicago01:05 → 03:1512:2148 min12:210 min15 Sep
Jersey City02:05 → 04:1512:2748 min12:270 min15 Sep
Port of Spain02:05 → 04:1511:3748 min11:370 min15 Sep
London07:05 → 09:1512:3148 min12:310 min15 Sep
Durban08:05 → 10:1511:2748 min11:270 min15 Sep
Dubai10:05 → 12:1511:5048 min11:4925 min15 Sep
Delhi11:35 → 13:4511:5248 min11:5248 min15 Sep
Kolkata11:35 → 13:4511:0820 min11:0748 min16 Sep
Singapore13:35 → 15:4512:060 min12:0548 min16 Sep
Sydney16:05 → 18:1511:270 min11:2648 min16 Sep
Suva18:05 → 20:1511:380 min11:3748 min16 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

About Ahargaṇa