I was wondering if there is a way to share one iCangeda installation on several websites?

I am managing several websites for different NGOs. Since they are all working in the same sector / on the same topic, it would be very helpful if they could share a single calendar and thus promote Events from their partner NGOs on their website while still using their own domains.

I was thinking of synchronizing the database with a cron job or something like this but I'm not much of a developer.

Since I am the only one managing all the websites and events, privacy of user registrations and user accounts are of no concern here.