Add perserverance landing event

_events/20210218-perseverance-landing.markdown

+---
+layout: [eventcal]
+title:  "LIVE Landing Broadcast: Perseverance Rover Lands on Mars"
+image: "/assets/wall.png"
+eventdate:   2021-02-18 20:15:00 +0100
+eventend:   2021-02-18  22:00:00 +0100
+#https://www.uuidgenerator.net/
+uid: 206F26FD-9BAC-46FC-B405-9A1E5DC95F2E
+contact: info@chaotikum.org
+locations:
+ - Augenprüfraum
+short: "Wir schauen gemeinsam https://www.youtube.com/nasa Siehe https://mars.nasa.gov/mars2020/timeline/landing/watch-online/"
+---