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Night Sky Tonight in San Martín Base, Antarctica

Moon: 37.5%
Waning Crescent
Night Time:20 hours, 39 minutes
Sunset:Jul 18 at 3:13 pm
End of Twilight*:Jul 18 at 6:12 pm
Start of Twilight*:Jul 19 at 8:55 am
Sunrise:Jul 19 at 11:51 am

*Nautical twilight

Location of San Martín BaseLocation

56th Anniversary of Apollo 11 on the Moon—Where Did It Land?

Neil Armstrong and Buzz Aldrin touched down in Mare Tranquillitatis on July 20, 1969. NASA’s Noah Petro tells us about the landing site.

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Our Interactive Night Sky Map simulates the sky above San Martín Base. The Moon and planets have been enlarged slightly for clarity. On mobile devices, tap to steer the map by pointing your device at the sky. Need some help?

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Tonight's Sky in San Martín Base, Jul 18 – Jul 19, 2025

Mercury rise and set in San Martín Base

Fairly close to the Sun. Visible only before sunrise and/or after sunset.

Mercury is just 20 degrees from the Sun in the sky, so it is difficult to see.

Fri, Jul 18 ↓6:38 pm
Sat, Jul 19 ↑10:55 am

Jul 18, 2025
Jul 19, 2025

Mercury

Time:

Altitude: °

Direction: °

Venus rise and set in San Martín Base

View before sunrise.

Venus can best be seen in the hours just before sunrise. Visibility deteriorates as the sky gets brighter. Venus is visible by day, but may be hard to find.

Sat, Jul 19 ↑9:02 am

Jul 18, 2025
Jul 19, 2025

Venus

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Altitude: °

Direction: °

Mars rise and set in San Martín Base

View after sunset.

Mars can best be seen in the hours just after sunset. Visibility improves as the sunlight fades.

Fri, Jul 18 ↓10:11 pm
Sat, Jul 19 ↑11:43 am

Jul 18, 2025
Jul 19, 2025

Mars

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Altitude: °

Direction: °

Saturn rise and set in San Martín Base

View in the early morning.

Saturn can be seen for more than 12 hours during the late night/early morning and until sunrise.

Fri, Jul 18 ↑11:30 pm

Jul 18, 2025
Jul 19, 2025

Saturn

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Altitude: °

Direction: °

Uranus rise and set in San Martín Base

View before sunrise. Bring binoculars.

Uranus can best be seen in the hours just before sunrise. Visibility deteriorates as the sky gets brighter. It is very close to the horizon, making it fainter because the light has to cover a larger distance when traveling through the Earth's atmosphere. Make sure to get an unobstructed view with as little light pollution as possible. You may need binoculars.

Sat, Jul 19 ↑7:39 am
Sat, Jul 19 ↓11:24 am

Jul 18, 2025
Jul 19, 2025

Uranus

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Altitude: °

Direction: °

Neptune rise and set in San Martín Base

View in the early morning. Use binoculars.

Neptune can be seen for more than 12 hours during the late night/early morning and until sunrise. Very faint, use binoculars.

Fri, Jul 18 ↑11:39 pm

Jul 18, 2025
Jul 19, 2025

Neptune

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Altitude: °

Direction: °

Planets Visible in San Martín Base

 Planetrise/Planetset, Sat, Jul 19, 2025
PlanetRiseSetMeridianComment
MercuryFri 11:02 amFri 6:38 pmFri 2:50 pmDifficult to see
VenusSat 9:02 amSat 12:17 pmSat 10:39 amGood visibility
MarsFri 11:47 amFri 10:11 pmFri 4:59 pmAverage visibility
JupiterDown all dayFri 12:19 pmDown all night, not visible
SaturnFri 11:30 pmSat 12:08 pmSat 5:49 amGreat visibility
UranusSat 7:39 amSat 11:24 amSat 9:31 amExtremely difficult to see
NeptuneFri 11:39 pmSat 11:57 amSat 5:48 amDifficult to see