Regarding the suspension of the AstraZeneca vaccine: a crucial point I haven’t seen mentioned is that the suspension is temporary: the AstraZeneca vaccinations were only suspended for four days. This is mentioned in the german FAQ that you linked (though presumably it was updated since you posted). In particular, EMA (the European Medicines Agency) recommended that vaccination be resumed on March 18, and the German Bund decided on the same day to resume vaccination on March 19th.
Also, not all EU countries halted vaccinations; my home country Austria for example continued using AstraZeneca.
It would be great if you could post a google calendar link (maybe for the next event). That would make it a lot easier to figure time zone issues (I almost messed up due to our switch to summer time on March 28).