Hi
Up until yesterday when setting a due date on a card I was also able to set a specific time. However, for some reason I am no longer able to do this. While I can change the due date, I am no longer able to change the time and the time either reverts to the previous time set or to whatever the time is currently.
This ability to set a specific time on a card was extremely helpful as reminders would be sent to me at the scheduled time.