In both cases the email was an hour off, and any suspension longer than a day rounded out the time to midnight, and also knocked a day off the date in the email version.
Edit: Making sure I got all the right screenshots along the way clouded my thinking.
It’s because it’s knocking an hour off 00:00 which causes it to be a day early. So, it’s more about the lost hour between input and email. And @dodesz lost two.