Globe at Night Citizen Science


Times for  September 9th- 18th

1 Easy step    Report

Five Easy Star Hunting Steps for new observers

  1. Use the Globe at Night website to help find your constellation in the night sky.
  2. Use the Globe at Night website to find the latitude and longitude of the location where you are making your observation.
  3. Go outside more than an hour after sunset (8-10 pm local time). The Moon should not be up. Let your eyes become used to the dark for 10 minutes before your first observation.
  4. Match your observation to one of 7 magnitude charts and note the amount of cloud cover.
  5. Report the date, time, location (latitude/longitude), the chart you chose, and the amount of cloud cover at the time of observation. Make more observations from other locations, if possible. Compare your observation to thousands around the world!:

Globe at Night 2020 Dates and Constellations

New for 2020: During many of the 2020 Globe at Night campaigns there will be more than one choice for which constellation is optimal to use. This will depend on your location around the globe. To decide which one is best for you at your location for the dates listed below, check to see if the constellation is more than halfway above the horizon. If so, you can use that constellation for the campaign. If not, try another suggested constellation for that month.

Note: if possible, use Orion during the month of February and March as there is a special project being conducted which needs the help of Globe at Night citizen scientists. As LED lights increasingly replace older technologies for outdoor lighting, astronomers are left asking whether the night sky is getting brighter or darker as a result. While they can measure changes at professional observatories, understanding what’s going on in backyards around the world is a lot harder, and they’re turning to the public for help. Starting with Valentine’s Day in February and Pi Day in March, Globe at Night is asking people to take part in the “Globe at Night” project a few times during both 10-day campaigns. We will be comparing your measurements of Orion with those taken in February and March 2011 and 2012. So, if possible, please use Orion.


Southern Constellations


January 16-15, 2020



February 14-23, March 14-24, 2020


Canis Major

April 14-23, May 14-23, 2020



June 13-22, 2020



July 12-21, 2020



August 10-19, 2020



September 9-18, 2020



October 8-17, November 7-16, 2020



December 6-15, 2020


More information about the times to record your measurements throughout the year.

Globe at Night

Image Credit: Alex Chereny, Terrastro.


The Observatory has been supporting this event since 2015.