Midday of Saturday 30 August
Taken. Both middays qualify; the rule is silent, and this one is covered longer.
madhyāhna begins 12:27 13:15 madhyāhna ends
Aṣṭamī begins 12:17:07
11:3912:0312:2712:5113:1513:3914:03
48 of 48 minutes covered
Ruling · Rādhāṣṭamī · 2025
Boundaryin Chicago, under the Rashtriya Panchang method. Both middays qualify and the rule does not say which to take. Say “contested”.
One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.
Midday of Saturday 30 August
Taken. Both middays qualify; the rule is silent, and this one is covered longer.
48 of 48 minutes covered
Midday of Sunday 31 August
Qualifies with 48 of 48 minutes. Not taken.
48 of 48 minutes covered
Aṅga
Aṣṭamī runs from 12:17 on Sat 30 Aug to 14:28 on Sun 31 Aug.
2025-08-30T17:17:08Z → 2025-08-31T19:28:14Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 30th, 12:26–13:14 on the 31st.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 30th and 48 of 48 on the 31st.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103
Tie-break
Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.
priority: unstated → greater-coverage · margin 576 s
Ruling
Rādhāṣṭamī, Chicago, 2025: Saturday 30 August.
confidence: boundary (tie-break-unstated)
In Chicago, Rādhāṣṭamī 2025 falls on Saturday 30 August. Aṣṭamī runs from 12:17 on Sat 30 Aug to 14:28 on Sun 31 Aug and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Sat 30 Aug |
| Ahargaṇa, classical | Disc centre, no refraction | Sat 30 Aug |
| compat-drikpanchang | Comparison profile | Sun 31 Aug |
| No institution has a recorded ruling for Chicago. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/radhashtami · ruleset 2026.3-draft
“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.
Twelve places, west to east. Local clock times.
| Place | Aṣṭamī | Madhyāhna 30th | Covered | Madhyāhna 31st | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 10:17 → 12:28 | 12:29 | 48 min | 12:29 | 0 min | 30 Aug |
| Chicago | 12:17 → 14:28 | 12:27 | 48 min | 12:26 | 48 min | 30 Aug |
| Jersey City | 13:17 → 15:28 | 12:32 | 3 min | 12:32 | 48 min | 31 Aug |
| Port of Spain | 13:17 → 15:28 | 11:43 | 0 min | 11:42 | 48 min | 31 Aug |
| London | 18:17 → 20:28 | 12:37 | 0 min | 12:36 | 48 min | 31 Aug |
| Durban | 19:17 → 21:28 | 11:33 | 0 min | 11:32 | 48 min | 31 Aug |
| Dubai | 21:17 → 23:28 | 11:55 | 0 min | 11:55 | 48 min | 31 Aug |
| Delhi | 22:47 → 00:58 | 11:57 | 0 min | 11:57 | 48 min | 31 Aug |
| Kolkata | 22:47 → 00:58 | 11:13 | 0 min | 11:13 | 48 min | 31 Aug |
| Singapore | 01:17 → 03:28 | 12:41 | 0 min | 12:41 | 48 min | 31 Aug |
| Sydney | 03:17 → 05:28 | 11:32 | 0 min | 11:32 | 48 min | 31 Aug |
| Suva | 05:17 → 07:28 | 11:43 | 0 min | 11:43 | 48 min | 31 Aug |