date format - last login time

That's not the way this module works. The Date module creates a date field and then displays it in various ways. You want to capture an existing date field created by another module and display it.

Not sure how easy that would be to do, but it would be something completely different than anything the module does now.

For the moment I'm going to mark it postponed and if something others have reasons why some sort of feature like this would have a broad use we can revisit it after Version 5.2 is up and running.

No feedback from anyone else on this, so marking it won't fix for now.