First Quarter Moon, October 2015
Tuesday, October 20, 4:31 p.m. EDT. The First Quarter Moon rises around 2:15 p.m. and sets around 12:30 a.m. It dominates the evening sky.
Double Shadow Transit on Jupiter, Oct. 25, 2015
Sunday, October 25, 8:36–10:53 a.m. EDT. Shadows of Io and Ganymede enter Jupiter's disk simultaneously, but Io's shadow completes the transit by 10:53 while Ganymede's takes over an hour longer. Best viewed in western North America.
Venus at Greatest Elongation West, October 2015
Monday, October 26, 3 a.m. EDT. Venus will be 46 degrees west of the sun.
Venus Near Jupiter, October 2015
Monday, October 26, 4 a.m. EDT. Venus will pass close to Jupiter.
Moon Near Uranus, October 2015
Monday, October 26, 6 a.m. EDT. The moon will occult Uranus as seen from New Zealand and French Polynesia. Here as seen from Auckland.
Moon at Perigee, October 2015
Monday, October 26, 9 a.m. EDT. The moon will be at its closest to the Earth this month. Expect high tides for the next four days.
Full Moon, October 2015
Tuesday, October 27, 8:05 a.m. EDT. The October Full Moon is known as the Hunter's Moon or Blood or Sanguine Moon. It rises around sunset and sets around sunrise; this is the only night in the month when the moon is in the sky all night long. The rest of the month, the moon spends at least some time in the daytime sky.
Moon Near Aldebaran, Oct. 29, 2015
Thursday, October 29, 8:30 p.m. local time. The moon again passes close to Aldebaran.
Mercury, October 2015
Mercury is well placed in the morning twilight for the most of the month. This apparition is more favorable for observers in the Southern Hemisphere.
Venus, October 2015
Venus is reaches its greatest western elongation from the sun on the 26th.
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