Hello Simone,
Thanks so much for writing in!
Great question. We actually have a service called Event Aggregator I think you’ll want to check out. As long as both sites are running The Events Calendar, you can purchase a license for Event Aggregator on the site you want to import events onto and it will pull the events from the other site on a scheduled basis so you only have to input the events on one site.
The best part: Event Aggregator is already included in The Events Calendar. All you need to do is purchase the license, add it to the Events > Settings > Licenses screen, and you’re good to go — no other plugins needed. 🙂
Does this help answer your question? Please let me know.
Cheers!
Geoff