ADD_HOUR( )
Adds a specified number of hours to a date value.
Syntax
ADD_HOUR(date, n)
Arguments
date
The date or date expression that represents the start date. If a start date does not have a time value, the function assumes the time is midnight, 12:00 AM.
n
The number of hours to add to the start date. If you specify a negative number, the result is as if the number is subtracted from the start date.
Returns
The date-and-time value that results from adding the specified number of hours to the start date.
Example
The following example adds eight hours to each date value in the ShipDate field:
ADD_HOUR([ShipDate], 8)

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