Day of Monday 15 January
Taken for Pongal. The transit falls in this day. Mattu Pongal is the day after.
17:19 sunset beforesunset 17:20
Sun enters Makara 09:37:08
16:5520:5500:5504:5508:5512:5516:55
Falls in this day
Ruling · Mattu Pongal · 2091
Determinatein Baoding, under the Rashtriya Panchang method. Kept the day after Pongal, Mon 15 Jan. Clear of every threshold by 463 minutes.
A tick is five ghaṭīs, two hours. The day is counted from the sunset before it to its own sunset.
Day of Monday 15 January
Taken for Pongal. The transit falls in this day. Mattu Pongal is the day after.
Falls in this day
Day of Tuesday 16 January
The transit does not fall in this day. Not taken.
Does not fall in this day
Aṅga
The Sun enters Makara at 09:37 on Mon 15 Jan.
2091-01-15T01:37:08Z · nirayana, lahiri-iae1985
Kāla
The day is counted from the sunset before it to its own sunset: the day of the 15th ends at 17:20, and the day of the 16th ends at 17:21.
sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′
Rule
The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 14th and the 15th.
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 sunset → only-day · margin 27773 s
Counted
Mattu Pongal is kept the day after Pongal: Monday 15 January is the day taken above.
follows: pongal + 1 d
Ruling
Mattu Pongal, Baoding, 2091: Tuesday 16 January.
confidence: determinate
In Baoding, Mattu Pongal 2091 falls on Tuesday 16 January. It is kept the day after Pongal, which falls on Monday 15 January. The Sun enters Makara at 09:37 on Mon 15 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 14th and the 15th.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Tue 16 Jan |
| Ahargaṇa, classical | Disc centre, no refraction | Tue 16 Jan |
| compat-drikpanchang | Comparison profile | Tue 16 Jan |
| Counted from midnight | CRC 1955, p. 106 | Tue 16 Jan |
| Counted from sunrise (the Orissa rule) | CRC 1955, p. 244 | Tue 16 Jan |
| No institution has a recorded ruling for Baoding. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/mattu-pongal · ruleset 2026.3-draft
“Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106. “The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day.” Calendar Reform Committee 1955, Rules of Samkranti, p. 244.
Twelve places, west to east. Local clock times.
| Place | Sun enters Makara | Sunset before 15th | Covered | Sunset before 16th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 17:37 | 17:06 | falls | 17:07 | no | 16 Jan |
| Chicago | 19:37 | 16:44 | falls | 16:45 | no | 16 Jan |
| Jersey City | 20:37 | 16:53 | falls | 16:54 | no | 16 Jan |
| Port of Spain | 21:37 | 18:02 | falls | 18:03 | no | 16 Jan |
| London | 01:37 | 16:19 | falls | 16:21 | no | 16 Jan |
| Durban | 03:37 | 19:01 | falls | 19:00 | no | 16 Jan |
| Dubai | 05:37 | 17:50 | falls | 17:51 | no | 16 Jan |
| Delhi | 07:07 | 17:45 | falls | 17:46 | no | 16 Jan |
| Kolkata | 07:07 | 17:12 | falls | 17:13 | no | 16 Jan |
| Singapore | 09:37 | 19:15 | falls | 19:16 | no | 16 Jan |
| Sydney | 12:37 | 20:09 | falls | 20:09 | no | 16 Jan |
| Suva | 13:37 | 18:48 | falls | 18:48 | no | 16 Jan |