During morning QA, we had a user that manually selected the current day (they opened the calendar to confirm). He did not notice that this defaulted the time to 19:30. Upon submitting results, he was greeted with a "Work started date/time can not be in the future".
This is not a big issue (the user should have noted the time), but, as a minor request perhaps when one selects the current date, then the current time could also be populated as the default.
Alternately, perhaps something like https://github.com/xdan/datetimepicker could be used, to help highlight the time in the picker.