Thanks in advance. A query named Qry_Time_Table has fields such as Date, Start-Time... But these are numbers representing dates and times. Below are examples. (Ex) Date Start_Time 38889 56001690 (What I want to achieve) Date Start_Time 6/21/06 6/21/06 09:30:00 How can I change these numbers into Date/Time format in calculated fields of the query or vice versa?