Reminders Popup Every Day with 1/1/1753 as Start Date

I am new to EM Client and have my reminders popping up every day with a start date of 1/1/1753. I imported the database from Outlook 2003 and also have GMail calendars synced. These reminders are actual reminders I have set but not for this date. Any suggestions?  Thanks!

Hi Brian,
are these reminders for Events or Tasks? If you edit these items, do the reminders stop?