Night of Tuesday 12 February
Taken. Both nights qualify; the rule is silent, and this one is covered longer.
niśītha begins 00:08 00:56 niśītha ends
23:2023:4400:0800:3200:5601:2001:44
48 of 48 minutes covered
Ruling · Mahāśivarātri (Shivratri) · 1991
Boundaryin Baoding, 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 Tuesday 12 February
Taken. Both nights qualify; the rule is silent, and this one is covered longer.
48 of 48 minutes covered
Night of Wednesday 13 February
Qualifies with 26 of 48 minutes. Not taken.
26 of 48 minutes covered, the first 26
Aṅga
Caturdaśī runs from 23:05 on Tue 12 Feb to 00:34 on Thu 14 Feb.
1991-02-12T15:05:07Z → 1991-02-13T16:34:28Z
Kāla
Niśītha is 1 ghaṭikā either side of midnight: 00:08–00:56 on the 12th, 00:08–00:56 on the 13th.
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 12th and 26 of 48 on the 13th.
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 1294 s
Ruling
Mahāśivarātri, Baoding, 1991: Tuesday 12 February.
confidence: boundary (tie-break-disputed)
In Baoding, Mahāśivarātri (Shivratri) 1991 falls on Tuesday 12 February. Caturdaśī runs from 23:05 on Tue 12 Feb to 00:34 on Thu 14 Feb and covers all of niśītha that night. It also reaches the next night for 26 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 | Tue 12 Feb |
| Ahargaṇa, classical | Disc centre, no refraction | Tue 12 Feb |
| compat-drikpanchang | Comparison profile | Tue 12 Feb |
| No institution has a recorded ruling for Baoding. | ||
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 12th | Covered | Niśītha 13th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 07:05 → 08:34 | 23:43 | 48 min | 23:43 | 0 min | 12 Feb |
| Chicago | 09:05 → 10:34 | 23:40 | 48 min | 23:40 | 0 min | 12 Feb |
| Jersey City | 10:05 → 11:34 | 23:46 | 48 min | 23:46 | 0 min | 12 Feb |
| Port of Spain | 11:05 → 12:34 | 23:56 | 48 min | 23:56 | 0 min | 12 Feb |
| London | 15:05 → 16:34 | 23:50 | 48 min | 23:50 | 0 min | 12 Feb |
| Durban | 17:05 → 18:34 | 23:46 | 48 min | 23:46 | 0 min | 12 Feb |
| Dubai | 19:05 → 20:34 | 00:09 | 48 min | 00:09 | 0 min | 12 Feb |
| Delhi | 20:35 → 22:04 | 00:11 | 48 min | 00:11 | 0 min | 12 Feb |
| Kolkata | 20:35 → 22:04 | 23:27 | 48 min | 23:27 | 0 min | 12 Feb |
| Singapore | 23:05 → 00:34 | 00:55 | 48 min | 00:55 | 0 min | 12 Feb |
| Sydney | 02:05 → 03:34 | 00:46 | 0 min | 00:46 | 48 min | 13 Feb |
| Suva | 03:05 → 04:34 | 23:57 | 0 min | 23:57 | 48 min | 13 Feb |