The date and time formats:
Short Date
Long Date
Short Time
Long Time
used in the Date and Time macros are defined systemwide in the Windows Control Panel under:
Region for Windows 8, Windows 8.1 and Windows 10
Region and Language for Windows 7
Region and Language Options for Windows XP
Note that you can have alternate date and time formats in your expansions without changing these systemwide formats using the powerful Custom Date Time macros.