Astronomy Day

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Astronomy Day
Status Active
Genre Astronomy-related events and competitions
Date(s) Saturday between mid-April and mid-May on or just before the first quarter moon
Frequency Semi-annually (Spring and Fall)
Country United States
Participants Astronomers and astronomy enthusiasts

Astronomy Day is an annual event in the United States - and later in other countries, like in Hungary - intended to provide a means of interaction between the general public and various astronomy enthusiasts, groups and professionals.

History[edit]

This event was started in 1973 by Doug Berger, the president of the Astronomical Association of Northern California. His intent was to set up various telescopes in busy urban locations so that passersby could enjoy views of the heavens. Since then the event has expanded and is now sponsored by a number of organizations associated with astronomy.[1]

Astronomy Day also forms part of National Astronomy Week, which begins on the preceding Monday.

Originally, Astronomy Day occurred on a Saturday between mid-April and mid-May, and was scheduled so as to occur at or close to the first quarter Moon. In 2007, an autumn rendition of Astronomy Day was added. It was scheduled to occur on a Saturday between mid-September and mid-October so as to be on or close to the first quarter Moon.

Future events[edit]

The lunar influence on the schedule means that the events happen on a different date each year, rather than set calendar dates. The table below shows the dates for up coming Astronomy Days:

Timeline of Astronomy Day events[2]
Year Season Astronomy Day First Quarter Moon
2018 Spring April 21 April 22
Autumn October 13 October 16
2019 Spring May 11 May 11
Autumn October 5 October 5
2020 Spring May 2 April 30
Autumn September 26 September 23
2021 Spring May 15 May 19
Autumn October 9 October 12
2022 Spring May 7 May 8
Autumn October 1 October 2
2023 Spring April 29 April 27
Autumn September 22 September 22
2024 Spring May 18 May 15
Autumn October 12 October 10
2025 Spring May 3 May 4
Autumn September 27 September 29

Past events[edit]

Timeline of Astronomy Day events[3]
Year Season Astronomy Day First Quarter Moon
2005 Spring April 16 April 16
2006 Spring May 6 May 5
2007 Spring April 21 April 24
2008 Spring May 10 May 12
2009 Spring May 2 May 1
2010 Spring April 24 April 21
Autumn October 16 October 14
2011 Spring May 7 May 10
Autumn October 1 October 3
2012 Spring April 28 April 30
Autumn October 20 October 21
2013 Spring April 20 April 18
Autumn October 13 October 11
2014 Spring May 10 May 7
Autumn October 4 October 1
2015 Spring April 25 April 25
Autumn September 19 September 21
2016 Spring May 14 May 13
Autumn October 8 October 9
2017 Spring April 29 May 2
Autumn September 30 September 27

See also[edit]

Astronomy
Environment
Events
Biology

References[edit]

  1. ^ Editors of Sky and Telescope;"Celebrate Astronomy Day"[1]. Nepe Sky And Telescope:April 28, 2012
  2. ^ "Astronomy Day Fact Sheet | The Astronomical League". www.astroleague.org. Retrieved 2016-05-09. 
  3. ^ "Astronomy Day Fact Sheet | The Astronomical League". www.astroleague.org. Retrieved 2016-05-09. 

External links[edit]