Mar 15: Zoom: Solar To The Max presented by Alan Friedman
https://members.denverastro.org/event-5649905

Mar 20: Astrophotography Special Interest Group
https://members.denverastro.org/event-5638941

Mar 21: Earth Hour
https://www.earthhour.org/

Mar 15-24: Sky and Telescope Observing Calendar
https://skyandtelescope.org/astronomy-news/observing-news/this-weeks-sky-at-a-glance-march-15-24/