Time left from current date until target.
|TargetDate||Target date you want to measure the number of days left until.|
Return value will be number of days from current date to target date.
If the target date is already past then the returned value will be prefixed with a minus sign.
For information regarding exceptions / errors, see here
% TimeLeftUntilTargetDate 2000-01-02
% TimeLeftUntilTargetDate 2000-01-01