Jens and Jochen, thanks for the links. Not exactly what I meant, but I guess it will do.

Was meaning maybe something a little more easier for beginners to use/learn i.e. laymans terms.

Hey guys... seems we lost one of the UDFs. Did the author delete it or what?

SerialDate() - Convert dates to numbers (and back) for the purpose of performing date
http://www.kixtart.org/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=12;t=000089;p=

SERIALTIME() - Convert time to numbers (and back) for the purpose of performing time
http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=12;t=000039

DateTimeMath() - Calculates the difference between two date-time strings
http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=12;t=000326

DateTimeDiff() - Calculates the time difference between two date-times-groups
http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=12;t=000374

TimeDiff() - Calculates the time difference between two times
http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=12;t=000040

DeltaTime() - Calculates time differences up to 23:59:59:999
http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=12;t=000011

DateCalc() - Calculates Days between or returns calculated Date (Days as modifier)
http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=12;t=000076

DateMath()
FYI You have requested a topic that does not exist!
http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=12;t=000102#000000