You can use these settings to adjust the formats of the date and time which are used at various places in the program. You can set a different format for each of the following date and times. Allowed date formats are listed here.
Alarms in alarm list
This is the format used in the alarm list in the main window.
Coming and past alarms list
This format is used in the lists of upcoming and past alarms.
This is the format used in the status bar which shows the next alarm and in the tooltip of the icon in the system tray.
Here you can specify the date format of the dates that appear at other places in the program.
Alarm properties window
Here you can specify the date format to be used in the alarm properties window. You can select the order of the day, month and year, toggle between 12 and 24 hour time formats and specify if seconds should be used or not.