Ruling · Rādhāṣṭamī · 2027

Wednesday 8 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 117 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 Tuesday 7 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

Midday of Wednesday 8 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

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 13:59 on Tue 7 Sep to 15:15 on Wed 8 Sep.

    2027-09-07T05:58:34Z → 2027-09-08T07:14:48Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 7th, 11:13–12:01 on the 8th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.

    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 7007 s

  5. 05

    Ruling

    Rādhāṣṭamī, Daqing, 2027: Wednesday 8 September.

    confidence: determinate

Say it like this

In Daqing, Rādhāṣṭamī 2027 falls on Wednesday 8 September. Aṣṭamī runs from 13:59 on Tue 7 Sep to 15:15 on Wed 8 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2027/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 8 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 8 Sep
compat-drikpanchangComparison profileWed 8 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 7thCoveredMadhyāhna 8thCoveredRuled
Los Angeles22:59 → 00:1512:2748 min12:260 min7 Sep
Chicago00:59 → 02:1512:2448 min12:240 min7 Sep
Jersey City01:59 → 03:1512:3048 min12:300 min7 Sep
Port of Spain01:59 → 03:1511:4048 min11:400 min7 Sep
London06:59 → 08:1512:3448 min12:340 min7 Sep
Durban07:59 → 09:1511:3048 min11:300 min7 Sep
Dubai09:59 → 11:1511:5348 min11:520 min7 Sep
Delhi11:29 → 12:4511:5548 min11:5548 min7 Sep
Kolkata11:29 → 12:4511:1130 min11:1048 min8 Sep
Singapore13:59 → 15:1512:390 min12:3848 min8 Sep
Sydney15:59 → 17:1511:300 min11:2948 min8 Sep
Suva17:59 → 19:1511:410 min11:4048 min8 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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