Ruling · Rādhāṣṭamī · 1903

Sunday 30 August

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 239 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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 Saturday 29 August

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:17  12:05 madhyāhna ends
10:2910:5311:1711:4112:0512:2912:53

0 of 48 minutes covered

Midday of Sunday 30 August

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:17  12:05 madhyāhna ends
10:2910:5311:1711:4112:0512:2912:53

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 16:04 on Sat 29 Aug to 17:14 on Sun 30 Aug.

    1903-08-29T08:04:08Z → 1903-08-30T09:13:57Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 29th, 11:17–12:05 on the 30th.

    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 29th and 48 of 48 on the 30th.

    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 14360 s

  5. 05

    Ruling

    Rādhāṣṭamī, Daqing, 1903: Sunday 30 August.

    confidence: determinate

Say it like this

In Daqing, Rādhāṣṭamī 1903 falls on Sunday 30 August. Aṣṭamī runs from 16:04 on Sat 29 Aug to 17:14 on Sun 30 Aug and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1903/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 30 Aug
Ahargaṇa, classicalDisc centre, no refractionSun 30 Aug
compat-drikpanchangComparison profileSun 30 Aug
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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles00:04 → 01:1411:3048 min11:290 min29 Aug
Chicago02:04 → 03:1411:2748 min11:270 min29 Aug
Jersey City03:04 → 04:1411:3348 min11:330 min29 Aug
Port of Spain04:04 → 05:1411:4348 min11:430 min29 Aug
London08:04 → 09:1411:3748 min11:370 min29 Aug
Durban10:04 → 11:1411:3348 min11:330 min29 Aug
Dubai11:45 → 12:5511:3740 min11:3648 min30 Aug
Delhi13:25 → 14:3511:490 min11:4948 min30 Aug
Kolkata13:25 → 14:3511:050 min11:0448 min30 Aug
Singapore14:59 → 16:0911:370 min11:3748 min30 Aug
Sydney18:04 → 19:1411:330 min11:3248 min30 Aug
Suva19:59 → 21:0911:390 min11:3848 min30 Aug
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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