Late afternoon of Friday 29 February
Pūrṇimā is absent from sāyāhna. Not taken.
16:02 sāyāhna beginssunset 18:17
15:3816:0216:2616:5017:1417:3818:0218:2618:50
0 of 135 minutes covered
Ruling · Holī · 1980
Determinatein Datong, under the Rashtriya Panchang method. Kept the day after Holikā Dahana, Sat 1 Mar. Clear of every threshold by 495 minutes.
One ghaṭī is 24 minutes. Sāyāhna is last 3 of 15 day muhūrtas.
Late afternoon of Friday 29 February
Pūrṇimā is absent from sāyāhna. Not taken.
0 of 135 minutes covered
Late afternoon of Saturday 1 March
Taken for Holikā Dahana. The only late afternoon Pūrṇimā reaches. Holī is the day after.
135 of 135 minutes covered
Aṅga
Pūrṇimā runs from 02:32 on Sat 1 Mar to 05:00 on Sun 2 Mar.
1980-02-29T18:31:47Z → 1980-03-01T20:59:39Z
Kāla
Sāyāhna is last 3 of 15 day muhūrtas: 16:02–18:17 on the 29th, 16:03–18:18 on the 1st.
sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′
Rule
Pūrṇimā must be present during sāyāhna. It covers 0 of 135 minutes on the 29th and 135 of 135 on the 1st.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105
Tie-break
Only one late afternoon qualifies. No tie-break is needed.
priority: unstated → only-day · margin 29691 s
Counted
Holī is kept the day after Holikā Dahana: Saturday 1 March is the day taken above.
follows: holika-dahana + 1 d
Ruling
Holī, Datong, 1980: Sunday 2 March.
confidence: determinate
In Datong, Holī 1980 falls on Sunday 2 March. It is kept the day after Holikā Dahana, which falls on Saturday 1 March. Pūrṇimā runs from 02:32 on Sat 1 Mar to 05:00 on Sun 2 Mar and covers all of sāyāhna on the 1st.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Sun 2 Mar |
| Ahargaṇa, classical | Disc centre, no refraction | Sun 2 Mar |
| compat-drikpanchang | Comparison profile | Sun 2 Mar |
| No institution has a recorded ruling for Datong. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/holi · ruleset 2026.3-draft
“S 15 Holika-dahana (Sayahnavyapini — it should be observed on second half of purnima at night), Dolayatra (Bengal & Orissa) (covering 4 ghatikas before sunrise of the day of festival), Holi — on the day after Holikadahana.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.
Twelve places, west to east. Local clock times.
| Place | Pūrṇimā | Sāyāhna 29th | Covered | Sāyāhna 1st | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 10:32 → 13:00 | 15:31 | 137 min | 15:32 | 0 min | 1 Mar |
| Chicago | 12:32 → 15:00 | 15:25 | 135 min | 15:26 | 0 min | 1 Mar |
| Jersey City | 13:32 → 16:00 | 15:32 | 135 min | 15:32 | 28 min | 1 Mar |
| Port of Spain | 14:32 → 17:00 | 15:53 | 143 min | 15:53 | 67 min | 1 Mar |
| London | 18:32 → 21:00 | 15:29 | 0 min | 15:30 | 131 min | 2 Mar |
| Durban | 20:32 → 23:00 | 15:57 | 0 min | 15:56 | 152 min | 2 Mar |
| Dubai | 22:32 → 01:00 | 16:01 | 0 min | 16:01 | 140 min | 2 Mar |
| Delhi | 00:02 → 02:30 | 16:02 | 0 min | 16:02 | 139 min | 2 Mar |
| Kolkata | 00:02 → 02:30 | 15:19 | 0 min | 15:20 | 140 min | 2 Mar |
| Singapore | 02:02 → 04:30 | 16:25 | 0 min | 16:24 | 145 min | 2 Mar |
| Sydney | 05:32 → 07:00 | 16:59 | 0 min | 16:58 | 154 min | 2 Mar |
| Suva | 06:32 → 09:00 | 16:03 | 0 min | 16:03 | 149 min | 2 Mar |