Njump now supports NIP-52 calendar events, e.g.

https://njump.me/naddr1qqyrywr9x43rxdr9qy8hwumn8ghj7mn0wd68ytnddaksygpc4vlncpsr9tek2dvk0jttc38dwjjxa4mz2k0fk3dzw5z2qa3frqpsgqqq0jes8pt49c


https://image.nostr.build/b5d9e205f9e357277d32359fa3efedf97d0a00f5af4a1feec342b467212fdb82.png