Okay I did what you asked but just to add a little more information to this problem I see that when I click on the (start Date & time) I used to get the calendar but now I have to change it manually, this also occurs for the End date & time) also it no longer asks for occurrences except the date it will end on and it has to be manually input.
After inputting in the information you requested I checked and the time for the second day changed from 10:00 am -11:00 am to 2:00 pm to 3:00 pm.
I then changed the theme to Twenty Thirteen and checked the events and it remained the same as my Designfolio Pro theme. I have no theme overrides, I changed the time zone with no effect, still remains with the error.