Determines if the given date is a real date.
1 if the components represent an actual calendar date, 0 if not.
|Year||A calendar year. (REQUIRED)|
|Month||A calendar month. (REQUIRED)|
|Day||A day for the given month. (REQUIRED)|
The "Validate" service determines if the the given components represent a valid calendar date. If even just one component is "out of bounds," then 0 is returned. Leap years is taken into account.