Night of Wednesday 5 March
Taken. Both nights qualify; the rule is silent, and this one is covered longer.
niśītha begins 23:47 00:35 niśītha ends
22:5923:2323:4700:1100:3500:5901:23
48 of 48 minutes covered
Ruling · Mahāśivarātri · 1913
Boundaryin Tehran, under the Rashtriya Panchang method. Both nights qualify and the authorities the rule cites disagree. Say “contested”.
One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.
Night of Wednesday 5 March
Taken. Both nights qualify; the rule is silent, and this one is covered longer.
48 of 48 minutes covered
Night of Thursday 6 March
Qualifies with 48 of 48 minutes. Not taken.
48 of 48 minutes covered
Aṅga
Caturdaśī runs from 22:31 on Wed 5 Mar to 01:10 on Fri 7 Mar.
1913-03-05T19:06:13Z → 1913-03-06T21:45:26Z
Kāla
Niśītha is 1 ghaṭikā either side of midnight: 23:47–00:35 on the 5th, 23:46–00:34 on the 6th.
nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 5th and 48 of 48 on the 6th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105
Tie-break
Both nights qualify and the cited authorities disagree. The one covered longer is ruled, as a boundary.
priority: disputed → greater-coverage · margin 2158 s
Ruling
Mahāśivarātri, Tehran, 1913: Wednesday 5 March.
confidence: boundary (tie-break-disputed)
In Tehran, Mahāśivarātri 1913 falls on Wednesday 5 March. Caturdaśī runs from 22:31 on Wed 5 Mar to 01:10 on Fri 7 Mar and covers all of niśītha that night. It also reaches the next night 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 | Wed 5 Mar |
| Ahargaṇa, classical | Disc centre, no refraction | Wed 5 Mar |
| compat-drikpanchang | Comparison profile | Wed 5 Mar |
| No institution has a recorded ruling for Tehran. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/maha-shivaratri · ruleset 2026.3-draft
“K 14 Mahasivaratri (nisithavyapini) — In some opinion it is to be observed on nisitha and in some opinion on pradosa. If occurs on two successive nisithas then according to Hemadri it is to be observed on the first day and according to Madhava, to be observed on the second day” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105. The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.
Twelve places, west to east. Local clock times.
| Place | Caturdaśī | Niśītha 5th | Covered | Niśītha 6th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 11:06 → 13:45 | 23:40 | 48 min | 23:40 | 0 min | 5 Mar |
| Chicago | 13:06 → 15:45 | 23:38 | 48 min | 23:38 | 0 min | 5 Mar |
| Jersey City | 14:06 → 16:45 | 23:44 | 48 min | 23:43 | 0 min | 5 Mar |
| Port of Spain | 15:06 → 17:45 | 23:54 | 48 min | 23:53 | 0 min | 5 Mar |
| London | 19:06 → 21:45 | 23:48 | 48 min | 23:47 | 0 min | 5 Mar |
| Durban | 21:06 → 23:45 | 23:44 | 48 min | 23:44 | 2 min | 5 Mar |
| Dubai | 22:47 → 01:26 | 23:47 | 48 min | 23:47 | 48 min | 5 Mar |
| Delhi | 00:36 → 03:15 | 00:09 | 20 min | 00:08 | 48 min | 6 Mar |
| Kolkata | 00:36 → 03:15 | 23:24 | 0 min | 23:24 | 48 min | 6 Mar |
| Singapore | 02:06 → 04:45 | 23:52 | 0 min | 23:52 | 48 min | 6 Mar |
| Sydney | 05:06 → 07:45 | 23:43 | 0 min | 23:43 | 48 min | 6 Mar |
| Suva | 07:01 → 09:40 | 23:49 | 0 min | 23:49 | 48 min | 6 Mar |