date
Thedate command
            
            
        Usage
date: gives the current date and timedate +(time format): gives current date and time in the format given (using standard date syntax)
Modifying dates
The -v option modifies the returned date. The command date -v <modifer> <format> will modify the date and return it in the provided format. Dates can be shifted forward or backward by a given amount using + or - followed by a number and a unit.