Buenos Aires
Sunrise and sunset in Buenos Aires
Today’s sunrise, sunset and twilight in Buenos Aires, in local time. At 34.6° S, the day lasts from 9 h 50 min at the winter solstice to 14 h 29 min at the summer solstice.
Today · worked out at
Wednesday, October 21: sunrise at 06:03, sunset at 19:12.
Day length 13 h 09 min, 2 min 4 s longer than yesterday.
Solar noon at 12:38, with the Sun 66° above the horizon.
Times are Buenos Aires time (GMT-3).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 04:34 | 20:42 |
| Nautical twilight | 05:06 | 20:10 |
| Civil twilight | 05:37 | 19:39 |
| Sunrise and sunset | 06:03 | 19:12 |
| Golden hour | 06:03–06:37 | 18:38–19:12 |
Each twilight begins at the morning time and ends at the evening one.
The year in Buenos Aires
- Longest day: December 21, 14 h 29 min, from sunrise at 05:37 to sunset at 20:06.
- Shortest day: June 21, 9 h 50 min, from sunrise at 08:00 to sunset at 17:50.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 06:02 | 20:06 | 14 h 04 min |
| February 21 | 06:33 | 19:39 | 13 h 06 min |
| March 21 | 06:57 | 19:03 | 12 h 06 min |
| April 21 | 07:21 | 18:22 | 11 h 01 min |
| May 21 | 07:44 | 17:55 | 10 h 11 min |
| June 21 | 08:00 | 17:50 | 9 h 50 min |
| July 21 | 07:55 | 18:05 | 10 h 10 min |
| August 21 | 07:26 | 18:27 | 11 h 01 min |
| September 21 | 06:44 | 18:49 | 12 h 05 min |
| October 21 | 06:03 | 19:12 | 13 h 09 min |
| November 21 | 05:36 | 19:42 | 14 h 06 min |
| December 21 | 05:37 | 20:06 | 14 h 29 min |
Good to know
- Sunrise and sunset are when the top of the Sun meets a level horizon, allowing for the usual bending of light by the air. Hills, buildings and height shift what you see by a few minutes.
- Civil, nautical and astronomical twilight end when the Sun is 6°, 12° and 18° below the horizon. Golden hour here is the photographers’ usual definition: the Sun less than 6° above it.
- Worked out when the page loads from NOAA’s solar equations, for 34.6° S, 58.4° W, and accurate to about a minute.
How the layers work, where their data comes from and what they can’t tell you: Day and night, live, The Sun, Moon and planets
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