Spring Astronomy Day

Annual event.

Dates:
2017Apr 29Sat
2018Apr 21Sat
2019May 11Sat
2020May 2Sat
2021May 15Sat
2022May 7Sat
Hashtags:
References:
astroleague.org/al/astroday/astrodayform.html
en.wikipedia.org/wiki/Astronomy_Day