Date Format on Old Posts

Is there any way to get a more detailed date to display on older posts than “Jun '15”?

Especially with training logs, it’s hard to tell how many days were between subsequent sessions if the date isn’t given. Can’t distinguish between “3x a month”, “3x a week”, “3x a day”, etc.

Something like the former “June 15, 2015” would be fine, with the month written out instead of numeric. Day of the week would be cool too, but not at all necessary.

If you click on the date of the post, a little window pops up giving you the exact date and time it was posted.