Suddenly no calendar entries are appearing on my iPhone even though I know There should be several.

Hello elrobmada,

It sounds like you need some help with missing calendar entries. We're happy to help!

Let's start by going to Settings > Calendar > Sync. Confirm that the Sync date is set to encompass the dates for the missing events. If the missing events don't appear, you can try restoring them from an earlier version of iCloud:

If you accidentally deleted your calendars, reminders, bookmarks, or contacts from iCloud - Apple Support

Please let us know if this helps. Cheers!

Hello elrobmada,

Thanks for letting us know this worked!

Cheers!