Late afternoon of Friday 20 August
Taken. Both late afternoons qualify; the rule takes the first.
16:21 sāyāhna beginssunset 18:55
Caturthī begins 18:53:54
15:5716:2116:4517:0917:3317:5718:2118:4519:09
2 of 154 minutes covered, the last 2
Ruling · Bahulā Caturthī · 2027
Boundaryin Ujjain, under the Rashtriya Panchang method. A threshold is only 1 min 31 s away. Say “contested”.
One ghaṭī is 24 minutes. Sāyāhna is last 3 of 15 day muhūrtas.
Late afternoon of Friday 20 August
Taken. Both late afternoons qualify; the rule takes the first.
2 of 154 minutes covered, the last 2
Late afternoon of Saturday 21 August
Qualifies with 154 of 154 minutes. Not taken.
154 of 154 minutes covered
Aṅga
Caturthī runs from 18:54 on Fri 20 Aug to 20:05 on Sat 21 Aug.
2027-08-20T13:23:55Z → 2027-08-21T14:35:07Z
Kāla
Sāyāhna is last 3 of 15 day muhūrtas: 16:21–18:55 on the 20th, 16:21–18:55 on the 21st.
sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′
Rule
Caturthī must be present during sāyāhna. It covers 2 of 154 minutes on the 20th and 154 of 154 on the 21st.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103
Tie-break
Both late afternoons qualify. Pūrvaviddhā: the first is taken.
priority: purvaviddha → purvaviddha · margin 91 s < 300 s
Ruling
Bahulā Caturthī, Ujjain, 2027: Friday 20 August.
confidence: boundary (margin)
In Ujjain, Bahulā Caturthī 2027 falls on Friday 20 August. Caturthī runs from 18:54 on Fri 20 Aug to 20:05 on Sat 21 Aug and covers 2 of 154 minutes of sāyāhna that late afternoon. It also reaches the next late afternoon for 154 minutes; by the rule the first late afternoon is taken. It is 1 min 31 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Fri 20 Aug |
| Ahargaṇa, classical | Disc centre, no refraction | Sat 21 Aug |
| compat-drikpanchang | Comparison profile | Fri 20 Aug |
| No institution has a recorded ruling for Ujjain. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/bahula-chaturthi · ruleset 2026.3-draft
“K 4 Bahula caturthi (Madhyadesa) (Sayahnavyapini: if occurs on two successive days, it is to be observed on the 1st day).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.
Twelve places, west to east. Local clock times.
| Place | Caturthī | Sāyāhna 20th | Covered | Sāyāhna 21st | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 06:24 → 07:35 | 16:55 | 159 min | 16:54 | 0 min | 20 Aug |
| Chicago | 08:24 → 09:35 | 16:59 | 164 min | 16:58 | 0 min | 20 Aug |
| Jersey City | 09:24 → 10:35 | 17:04 | 163 min | 17:03 | 0 min | 20 Aug |
| Port of Spain | 09:24 → 10:35 | 15:53 | 149 min | 15:53 | 0 min | 20 Aug |
| London | 14:24 → 15:35 | 17:21 | 172 min | 17:20 | 0 min | 20 Aug |
| Durban | 15:24 → 16:35 | 15:20 | 130 min | 15:20 | 75 min | 20 Aug |
| Dubai | 17:24 → 18:35 | 16:14 | 85 min | 16:14 | 141 min | 20 Aug |
| Delhi | 18:54 → 20:05 | 16:19 | 2 min | 16:19 | 156 min | 20 Aug |
| Kolkata | 18:54 → 20:05 | 15:31 | 0 min | 15:30 | 154 min | 21 Aug |
| Singapore | 21:24 → 22:35 | 16:47 | 0 min | 16:46 | 146 min | 21 Aug |
| Sydney | 23:24 → 00:35 | 15:17 | 0 min | 15:17 | 132 min | 21 Aug |
| Suva | 01:24 → 02:35 | 15:38 | 0 min | 15:38 | 139 min | 21 Aug |