Ruling · Rādhāṣṭamī · 1939

Wednesday 20 September

Determinatein Puning, under the Rashtriya Panchang method. Clear of every threshold by 276 minutes.

Decide it for

23°19′ N 116°10′ E · Asia/Shanghai · GeoNames 1802940

The two middays

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

Midday of Wednesday 20 September

Taken. The only midday Aṣṭamī reaches.

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

48 of 48 minutes covered

Midday of Thursday 21 September

Aṣṭamī is absent from madhyāhna. Not taken.

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

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 06:10 on Wed 20 Sep to 07:08 on Thu 21 Sep.

    1939-09-19T22:10:14Z → 1939-09-20T23:08:13Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 20th, 11:45–12:33 on the 21st.

    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 20th and 0 of 48 on the 21st.

    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 16583 s

  5. 05

    Ruling

    Rādhāṣṭamī, Puning, 1939: Wednesday 20 September.

    confidence: determinate

Say it like this

In Puning, Rādhāṣṭamī 1939 falls on Wednesday 20 September. Aṣṭamī runs from 06:10 on Wed 20 Sep to 07:08 on Thu 21 Sep and covers all of madhyāhna that midday.

ahargana.org/puning/festivals/1939/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 20 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 20 Sep
compat-drikpanchangComparison profileWed 20 Sep
No institution has a recorded ruling for Puning.

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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles14:10 → 15:0811:230 min11:2248 min20 Sep
Chicago17:10 → 18:0812:200 min12:2048 min20 Sep
Jersey City18:10 → 19:0812:260 min12:2648 min20 Sep
Port of Spain18:10 → 19:0811:360 min11:3648 min20 Sep
London23:10 → 00:0812:300 min12:3048 min20 Sep
Durban00:10 → 01:0811:260 min11:2648 min20 Sep
Dubai02:10 → 03:0811:490 min11:4848 min20 Sep
Delhi03:40 → 04:3811:510 min11:5148 min20 Sep
Kolkata03:40 → 04:3811:070 min11:0648 min20 Sep
Singapore05:30 → 06:2811:550 min11:5448 min20 Sep
Sydney08:10 → 09:0811:260 min11:2548 min20 Sep
Suva10:10 → 11:0811:370 min11:3648 min20 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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