International Dark Sky Week took place April 15-21, 2018. Hashtag: #idsw2018
Key Links
http://www.darksky.org
http://www.darksky.org/dark-sky-week-2018
https://www.facebook.com/IDAdarksky
https://twitter.com/IDADarkSky
Twitter Moment
https://twitter.com/i/moments/985891301919883265
History
International Dark Sky Week was created in 2003 by high-school student Jennifer Barlow and the event has grown to become a worldwide event and a key component of Global Astronomy Month. Each year it is held in April around Astronomy Day.
Planeta.com