Thank you for the report! This is very interesting bug. I suspect it has been there for a long time but nobody reported it so clearly. Could you additionnally please post a screenshot? And if you dont mind directly creating the ticket at: dev.piwik.org copy pasting your very good description here?
Does the "wrong date" issue affect only the "Visitor Log" , and also the "Live real time visits" widget ?
Does the "wrong date" issue affect only the "Visitor Log" , and also the "Live real time visits" widget ?