I use the default time format in W10 for Germany, which is HH:mm.
Am aware that the first entry implies I could choose anything between 0:00 and 23:59 but that's not the case - when I try to enter anything <12PM it registered it as corresponding PM time.
For instance when I hit 6 on the keyboard it enters 18:00 (same is true when I enter 06).
I tried to change the language in EAM to German or English, didn't change anything unfortunately.
Using the up and down commands in the Scheduled Scan hour fields the time jumps from the default 0:00 to 13:00, 14:00, ..., 23:00, 0:00.