This application transforms a single date to a unique numeric value calledJulian day number (JulianDno on the screen)This function is often used in computersystems where you want to sort information indate order and when your date format doesn'tsupport ordinary sort routines.The Reversed Dno field is calculated as :
9999999 - JulianDno.
That is useful if you want to sort information in a date Descending order.