Astronomy Day is an annual event intended to provide a means of interaction between the general public and various astronomy enthusiasts, groups and professionals.
This event was started in 1973 by the president of the Astronomical Association of Northern California, Doug Berger. His intent was to set up various telescopes in busy urban locations so that passers-by could enjoys views of the heavens. Since then the even has expanded and is now sponsored by a number of organizations associated with astronomy.
Astronomy Day occurs on a Saturday between mid-April and mid-May, and is scheduled so as to occur at or just before the first quarter Moon. This means that the event happens on a different date each year, rather than a set calendar date. The table below shows the dates for Astronomy day:
| Year
| Astronomy Day
| First Quarter Moon
|
| 2005
| April 16th
| April 16th
|
| 2006
| May 6th
| May 5th
|
| 2007
| April 21st
| April 24th
|
| 2008
| May 10th
| May 12th
|
Astronomy Day also forms part of Astronomy Week, which begins the preceding Monday.
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