The sun, month by month
Sunrise and sunset in Buenos Aires in March
On March 1 in Buenos Aires the sun rises at 06:39 and sets at 19:34; on day 31 it rises at 07:04 and sets at 18:52. Over the month the day gets 66 minutes shorter.
Where does the sun rise and set in Buenos Aires in March?
Mid-March in Buenos Aires: the sun rises in the east — a bearing of 94°, measured from true north — and sets in the west, at 266°. That is 4° south of due east at sunrise, and the same 4° south of due west at sunset. From the 1st to the last day of the month both points shift 14° north.
Approximate bearings: they can be a couple of degrees out. They are measured from true north, not the north a phone compass points to.
Day by day
All times are local to Buenos Aires. Dawn and dusk mark civil twilight.
| Day | Dawn | Sunrise | Sunset | Dusk | Day length |
|---|---|---|---|---|---|
| 1 | 06:14 | 06:39 | 19:34 | 19:59 | 12 h 54 min |
| 2 | 06:15 | 06:40 | 19:32 | 19:58 | 12 h 52 min |
| 3 | 06:16 | 06:41 | 19:31 | 19:57 | 12 h 50 min |
| 4 | 06:16 | 06:42 | 19:30 | 19:56 | 12 h 48 min |
| 5 | 06:17 | 06:43 | 19:29 | 19:54 | 12 h 46 min |
| 6 | 06:18 | 06:44 | 19:27 | 19:53 | 12 h 44 min |
| 7 | 06:19 | 06:45 | 19:26 | 19:51 | 12 h 41 min |
| 8 | 06:20 | 06:45 | 19:25 | 19:50 | 12 h 39 min |
| 9 | 06:21 | 06:46 | 19:23 | 19:49 | 12 h 37 min |
| 10 | 06:22 | 06:47 | 19:22 | 19:47 | 12 h 35 min |
| 11 | 06:23 | 06:48 | 19:21 | 19:46 | 12 h 33 min |
| 12 | 06:24 | 06:49 | 19:19 | 19:44 | 12 h 30 min |
| 13 | 06:24 | 06:50 | 19:18 | 19:43 | 12 h 28 min |
| 14 | 06:25 | 06:51 | 19:16 | 19:42 | 12 h 26 min |
| 15 | 06:26 | 06:51 | 19:15 | 19:40 | 12 h 24 min |
| 16 | 06:27 | 06:52 | 19:14 | 19:39 | 12 h 21 min |
| 17 | 06:28 | 06:53 | 19:12 | 19:37 | 12 h 19 min |
| 18 | 06:29 | 06:54 | 19:11 | 19:36 | 12 h 17 min |
| 19 | 06:29 | 06:55 | 19:09 | 19:35 | 12 h 15 min |
| 20 | 06:30 | 06:55 | 19:08 | 19:33 | 12 h 13 min |
| 21 | 06:31 | 06:56 | 19:07 | 19:32 | 12 h 10 min |
| 22 | 06:32 | 06:57 | 19:05 | 19:30 | 12 h 08 min |
| 23 | 06:33 | 06:58 | 19:04 | 19:29 | 12 h 06 min |
| 24 | 06:33 | 06:59 | 19:02 | 19:27 | 12 h 04 min |
| 25 | 06:34 | 06:59 | 19:01 | 19:26 | 12 h 01 min |
| 26 | 06:35 | 07:00 | 18:59 | 19:24 | 11 h 59 min |
| 27 | 06:36 | 07:01 | 18:58 | 19:23 | 11 h 57 min |
| 28 | 06:37 | 07:02 | 18:57 | 19:22 | 11 h 55 min |
| 29 | 06:37 | 07:03 | 18:55 | 19:20 | 11 h 53 min |
| 30 | 06:38 | 07:03 | 18:54 | 19:19 | 11 h 50 min |
| 31 | 06:39 | 07:04 | 18:52 | 19:17 | 11 h 48 min |
Approximate astronomical values: they can shift a minute or two from year to year.
What about vitamin D in March?
In March, the typical synthesis window in Buenos Aires runs from 10:00 to 17:00: with medium skin and a t-shirt, ~7 min at the best moment is enough.
See the Buenos Aires vitamin D guideCommon questions about the sun in Buenos Aires in March
- Where does the sun set in Buenos Aires in March?
- Mid-March in Buenos Aires: the sun sets in the west, a bearing of 266° measured from true north, which is 4° south of due west. It rises in the east, at 94°. Over the month both points shift 14° north.
- How much daylight does Buenos Aires lose in March?
- Over March the day gets 66 minutes shorter in Buenos Aires: on March 1 the sun rises at 06:39 and sets at 19:34, and on day 31 it rises at 07:04 and sets at 18:52.
- How many hours of daylight does Buenos Aires get in March?
- In mid-March the day lasts 12 h 24 min in Buenos Aires, from sunrise at 06:51 to sunset at 19:15. The table has the day length for each of the 31 days of the month.
- What time does it start to get light in Buenos Aires in March?
- In mid-March the sky starts to get light at 06:26 in Buenos Aires, when the sun is 6° below the horizon, and the sun itself does not rise until 06:51. The “Dawn” column of the table gives that time for every day of the month.
- What time does it get dark in Buenos Aires in March?
- It's not the same time as sunset. In mid-March in Buenos Aires the sun sets at 19:15, but there is still light: civil twilight does not end until 19:40, when the sun reaches 6° below the horizon and usable outdoor light runs out. The “Dusk” column of the table gives that time day by day.
- What time of day can you make vitamin D in Buenos Aires in March?
- In mid-March, between 10:00 and 17:00: that is the stretch of the day when the UV index reaches 3 in Buenos Aires, the minimum for the skin to make vitamin D. At the best moment of the day about 7 minutes are enough for a mid-range skin phototype with a quarter of the body exposed to make around 1000 IU.