Ruling · Rādhāṣṭamī · 1954

Sunday 5 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 107 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

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

Midday of Sunday 5 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:14  12:02 madhyāhna ends
10:2610:5011:1411:3812:0212:2612:50

48 of 48 minutes covered

Midday of Monday 6 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:14  12:02 madhyāhna ends
10:2610:5011:1411:3812:0212:2612:50

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 07:23 on Sun 5 Sep to 09:27 on Mon 6 Sep.

    1954-09-04T23:23:05Z → 1954-09-06T01:27:04Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 5th, 11:14–12:02 on the 6th.

    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 5th and 0 of 48 on the 6th.

    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 6426 s

  5. 05

    Ruling

    Rādhāṣṭamī, Daqing, 1954: Sunday 5 September.

    confidence: determinate

Say it like this

In Daqing, Rādhāṣṭamī 1954 falls on Sunday 5 September. Aṣṭamī runs from 07:23 on Sun 5 Sep to 09:27 on Mon 6 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1954/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 5 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 5 Sep
compat-drikpanchangComparison profileSun 5 Sep
No institution has a recorded ruling for Daqing.

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 4thCoveredMadhyāhna 6thCoveredRuled
Los Angeles16:23 → 18:2712:280 min12:270 min5 Sep
Chicago18:23 → 20:2712:250 min12:250 min5 Sep
Jersey City19:23 → 21:2712:310 min12:300 min5 Sep
Port of Spain19:23 → 21:2711:410 min11:400 min5 Sep
London00:23 → 02:2712:350 min12:340 min5 Sep
Durban01:23 → 03:2711:310 min11:310 min5 Sep
Dubai03:23 → 05:2711:540 min11:530 min5 Sep
Delhi04:53 → 06:5711:560 min11:550 min5 Sep
Kolkata04:53 → 06:5711:120 min11:110 min5 Sep
Singapore06:53 → 08:5712:100 min12:090 min5 Sep
Sydney09:23 → 11:2711:310 min11:300 min5 Sep
Suva11:23 → 13:2711:420 min11:4148 min5 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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