
25
March
Messier Marathon season
See: http://en.wikipedia.org/wiki/Messier_marathon

20
March
Vernal Equinox
Day and night are equally long

21
August
Total solar eclipse
As seen from the Earth, a solar eclipse is a type of eclipse that occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks ("occults") the Sun. This can happen only at new moon, when the Sun and the Moon are in conjunction as seen from Earth in an alignment referred to as syzygy. In a total eclipse, the disk of the Sun is fully obscured by the Moon. - Wikipedia

20
June
Summer Solstice
This is the first day of summer in the northern hemisphere, and the first day of winter in the southern hemisphere. The Sun will have reached its northernmost position in the sky, with the north pole tilting towards the sun.

7
August

11
February

18
December
New Moon - 1:30am EST
The moon is between us and the sun. Without the moon in the sky at night, deep sky objects are easier to observe.

18
November
New Moon - 6:42am EST
The moon is between us and the sun. Without the moon in the sky at night, deep sky objects are easier to observe.

19
October
New Moon - 3:12pm EDT
The moon is between us and the sun. Without the moon in the sky at night, deep sky objects are easier to observe.

20
September
New Moon - 1:30am EDT
The moon is between us and the sun. Without the moon in the sky at night, deep sky objects are easier to observe.