6
September
International Observe the Moon Night
See: http://observethemoonnight.org/
11
December
Globe at Night
Measuring light pollution of your sky, See: www.globeatnight.org
12
November
Globe at Night
Measuring light pollution of your sky, See: www.globeatnight.org
14
October
Globe at Night
Measuring light pollution of your sky, See: www.globeatnight.org
20
September
Globe at Night
Measuring light pollution of your sky, See: www.globeatnight.org
15
September
Globe at Night
Measuring light pollution of your sky, See: www.globeatnight.org
15
August
Globe at Night
Measuring light pollution of your sky, See: www.globeatnight.org
16
July
Globe at Night
Measuring light pollution of your sky, See: www.globeatnight.org
17
June
Globe at Night
Measuring light pollution of your sky, See: www.globeatnight.org
29
May
Globe at Night
Measuring light pollution of your sky, See: www.globeatnight.org