Registration date should use 24 hour clock

When the registration list is downloaded, it has the registration date and time. The time format is Hr:Min:Sec AM/PM. When used in a spreadsheet and sorted, it can end up being incorrect because 02:00:00 PM will sort before 03:00:00 AM. If a 24 hour format was used, those times would be 14:00:00 and 03:00:00 and would then sort correctly.