Ruling · Rādhāṣṭamī · 2010

Wednesday 15 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 577 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Wednesday 15 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

48 of 48 minutes covered

Midday of Thursday 16 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

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 01:40 on Wed 15 Sep to 02:12 on Thu 16 Sep.

    2010-09-14T17:39:38Z → 2010-09-15T18:11:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 15th, 11:49–12:37 on the 16th.

    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 15th and 0 of 48 on the 16th.

    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 34624 s

  5. 05

    Ruling

    Rādhāṣṭamī, Baoding, 2010: Wednesday 15 September.

    confidence: determinate

Say it like this

In Baoding, Rādhāṣṭamī 2010 falls on Wednesday 15 September. Aṣṭamī runs from 01:40 on Wed 15 Sep to 02:12 on Thu 16 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2010/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 15 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 15 Sep
compat-drikpanchangComparison profileWed 15 Sep
No institution has a recorded ruling for Baoding.

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 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles10:40 → 11:1212:2448 min12:240 min14 Sep
Chicago12:40 → 13:1212:2230 min12:2148 min15 Sep
Jersey City13:40 → 14:1212:270 min12:2748 min15 Sep
Port of Spain13:40 → 14:1211:380 min11:3748 min15 Sep
London18:40 → 19:1212:320 min12:3148 min15 Sep
Durban19:40 → 20:1211:280 min11:2748 min15 Sep
Dubai21:40 → 22:1211:500 min11:5048 min15 Sep
Delhi23:10 → 23:4211:530 min11:5248 min15 Sep
Kolkata23:10 → 23:4211:080 min11:0848 min15 Sep
Singapore01:40 → 02:1212:360 min12:3648 min15 Sep
Sydney03:40 → 04:1211:270 min11:2748 min15 Sep
Suva05:40 → 06:1211:380 min11:3848 min15 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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