{DATE} returns the actual date (weekday mmm dd hh:mm:ss time zone yyyy)
{DATE::[+|-][mi|hh|dd|mm|yy]digit} returns the actual date plus or minus a certain time.
[+|-] plus or minus the specified time
[mi|hh|dd|mm|yy] time to be added or substracted - mi stands for minute, hh for hour, dd for day, mm for month and yy for year
digit how many times the specified time should be added or substracted
{DATE} returns Tue Apr 20 10:54:43 PDT 1999
{DATE::+mm1} returns Thu May 20 10:54:44 PDT 1999