Day of Sunday 12 April
Taken. The transit falls in this day.
05:10 sunrisenext sunrise 05:10
Sun enters Meṣa 21:44:27
04:4608:4612:4616:4620:4600:4604:46
Falls in this day
Ruling · Vaiśākhī · 1908
Determinatein Luanda, under the Rashtriya Panchang method. Clear of every threshold by 446 minutes.
A tick is five ghaṭīs, two hours. The day is sunrise to the next sunrise.
Day of Sunday 12 April
Taken. The transit falls in this day.
Falls in this day
Day of Monday 13 April
The transit does not fall in this day. Not taken.
Does not fall in this day
Aṅga
The Sun enters Meṣa at 21:44 on Sun 12 Apr.
1908-04-12T21:44:28Z · nirayana, lahiri-iae1985
Kāla
The day runs from sunrise to the next sunrise: from 05:10 on the 12th, and from 05:10 on the 13th.
day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′
Rule
The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 12th, not the 13th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106
Tie-break
An instant falls in one day and no other. No tie-break is needed.
day counted from sunrise → only-day · margin 26739 s
Ruling
Vaiśākhī, Luanda, 1908: Sunday 12 April.
confidence: determinate
In Luanda, Vaiśākhī 1908 falls on Sunday 12 April. The Sun enters Meṣa at 21:44 on Sun 12 Apr, and the rule counts the day from sunrise. By the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 13 April.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Sun 12 Apr |
| Ahargaṇa, classical | Disc centre, no refraction | Sun 12 Apr |
| compat-drikpanchang | Comparison profile | Sun 12 Apr |
| Counted from midnight | CRC 1955, p. 106 | Sun 12 Apr |
| Past sunset, the next day (the Tamil rule) | CRC 1955, p. 244 | Mon 13 Apr |
| No institution has a recorded ruling for Luanda. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/vaishakhi · ruleset 2026.3-draft
“Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106. “The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106. The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.
Twelve places, west to east. Local clock times.
| Place | Sun enters Meṣa | Sunrise 12th | Covered | Sunrise 13th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 13:44 | 05:26 | falls | 05:25 | no | 12 Apr |
| Chicago | 15:44 | 05:16 | falls | 05:14 | no | 12 Apr |
| Jersey City | 16:44 | 05:23 | falls | 05:21 | no | 12 Apr |
| Port of Spain | 17:44 | 05:57 | falls | 05:57 | no | 12 Apr |
| London | 21:44 | 05:13 | falls | 05:11 | no | 12 Apr |
| Durban | 23:44 | 06:13 | falls | 06:14 | no | 12 Apr |
| Dubai | 01:25 | 05:41 | falls | 05:40 | no | 12 Apr |
| Delhi | 03:14 | 06:00 | falls | 05:59 | no | 12 Apr |
| Kolkata | 03:14 | 05:20 | falls | 05:19 | no | 12 Apr |
| Singapore | 04:44 | 06:02 | falls | 06:01 | no | 12 Apr |
| Sydney | 07:44 | 06:15 | no | 06:16 | falls | 13 Apr |
| Suva | 09:39 | 06:10 | no | 06:10 | falls | 13 Apr |