Future time posted?

I'm looking at time spent on computer for one of my children, and it says 3 hours today (Monday), and 4 hours Tuesday (tomorrow). How can he have spent time in the future already? His clock/timezone are all correct.

 

When I look at last month, the 3rd week of the month also has 3hrs Monday, 4hrs Tuesday. Is it possible we've got a bug with reporting?