^date::create(number of days since EPOCH)
Constructor with only one parameter is designed for specifying relative date and time values. Having object of class date, one can make up a new object of the same type, whose value will be shifted with respect to the initial.
Example $now[^date::now[]]
$date_after_week[^date::create($now+1)]
The example creates a date and time to come 24 hours after the current date and time.
Parameter of the constructor does not have to be an integer number.