MS-DOS Commands :: date
Displays or sets the computer's date. See also: time
Tip: If you want to set your computer's internal clock, it is recommended that you do that task via the Date and Time Control Panel (Start > Settings > Control Panel > Date and Time).
Displays or sets the date. DATE [/T | date] Type DATE without parameters to display the current date setting and a prompt for a new one. Press ENTER to keep the same date. If Command Extensions are enabled the DATE command supports the /T switch which tells the command to just output the current date, without prompting for a new date.
(Enlarge: help date)