function (optionalfileTimeas nullable any) as nullable any
datetimezone value from the fileTime value and converts it to the local time zone. The filetime is a Windows file time value that represents the number of 100-nanosecond intervals that have elapsed since 12:00 midnight, January 1, 1601 A.D. (C.E.) Coordinated Universal Time (UTC).129876402529842245 into a datetimezone value.
datetimezone(2012, 7, 24, 14, 50, 52.9842245, -7, 0)