Ruling · Rādhāṣṭamī · 2036

Thursday 28 August

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 7 min 34 s.

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 Thursday 28 August

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:17  12:05 madhyāhna ends
Aṣṭamī begins 10:29:33
10:2910:5311:1711:4112:0512:2912:53

48 of 48 minutes covered

Midday of Friday 29 August

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:16  12:04 madhyāhna ends
Aṣṭamī ends 11:08:53
10:2810:5211:1611:4012:0412:2812:52

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 10:30 on Thu 28 Aug to 11:09 on Fri 29 Aug.

    2036-08-28T02:29:33Z → 2036-08-29T03:08:54Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 28th, 11:16–12:04 on the 29th.

    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 28th and 0 of 48 on the 29th.

    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 454 s

  5. 05

    Ruling

    Rādhāṣṭamī, Daqing, 2036: Thursday 28 August.

    confidence: determinate

Say it like this

In Daqing, Rādhāṣṭamī 2036 falls on Thursday 28 August. Aṣṭamī runs from 10:30 on Thu 28 Aug to 11:09 on Fri 29 Aug and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2036/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 28 Aug
Ahargaṇa, classicalDisc centre, no refractionThu 28 Aug
compat-drikpanchangComparison profileThu 28 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 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles19:30 → 20:0912:3048 min12:290 min28 Aug
Chicago21:30 → 22:0912:2748 min12:270 min28 Aug
Jersey City22:30 → 23:0912:3348 min12:330 min28 Aug
Port of Spain22:30 → 23:0911:4348 min11:430 min28 Aug
London03:30 → 04:0912:3748 min12:370 min28 Aug
Durban04:30 → 05:0911:3348 min11:330 min28 Aug
Dubai06:30 → 07:0911:5648 min11:550 min28 Aug
Delhi08:00 → 08:3911:5848 min11:580 min28 Aug
Kolkata08:00 → 08:3911:1448 min11:130 min28 Aug
Singapore10:30 → 11:0912:4248 min12:410 min28 Aug
Sydney12:30 → 13:0911:330 min11:3248 min29 Aug
Suva14:30 → 15:0911:440 min11:4348 min29 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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