8
April
Mars at opposition
Mars is closest to earth for the year, giving the best views in a telescope.
22
April
Lyrid Meteors
See: http://en.wikipedia.org/wiki/Lyrids
17
November
Leonid Meteors
See: http://en.wikipedia.org/wiki/Leonids
1
April
Global Astronomy Month
See: http://universechallenge.org/global-astronomy-month-2013/
13
December
Geminid meteors
See: http://en.wikipedia.org/wiki/Geminids
29
March
Earth Hour
See: http://en.wikipedia.org/wiki/Earth_Hour
22
April
Earth Day
See: http://en.wikipedia.org/wiki/Earth_Day
18
August
Conjunction of Venus and Jupiter
Venus and Jupiter are close to one another. Easily viewable without a telescop from the city.
7
June
Conjunction of the Moon and Mars
Both Mars and the Moon are in the constellation Virgo. Saturn is close by as well. Easily viewed without a telescope, even from the city.
23
September
Autumnal Equinox
The earth's axis is perpendicular to its orbit with the North pole tipping away form the sun. In other words, the season is changing to Fall.