Calculates the time interval between 2 points in time.
Calculates the point in time (in the future or in the past), in a distance interval against referent (base) point in time.
Calculates the time interval against referent (base) point in time, as a sum or difference of 2 time intervals.
Calculates the time interval against referent (base) point in time for given time interval multiplied or divided by number.
All calculations based on given Reference Date.
Currently support only Gregorian Calendar for all Regional settings.