Syntax: @DAY(DT)
DT = a date/time value
@DAY returns the day of the month component of the date/time value DT.
Examples:
@DAY(24203) = 6 (24203 represents April 6, 1966)
@DAY(@TODAY) = 25, where TODAY = January 25, 1994
@DAY(366) = 31 (366 represents December 31, 1900)