Hi fxidesigns,
Thanks for getting in touch. There isn’t a built in way to duplicate an event. The easiest way to duplicate one of your existing events is to use a post duplicating plugin. We have a UserVoice thread where users can vote for us to add a duplicate event feature. Additionally, several users there have commented with post duplicating plugins that worked nicely for them.
We are also working on adding more complex recurring event options, so in the future you may be able to make yours a recurring event instead of two separate but duplicated events.
Best,
Leah