Converting Unix epoch format to normal date for filePro

[Larry Hoover]

When you take a Unix epoch formatted date such as: 1240432776, you can 
convert it to a filePro friendly date such as 04/22/09 in Linux with the 
command: 
date +%D --date "Jan 1, 1970 00:00:00 +0000 + 1240432776 seconds"
I can't seem to find a way to do this in SCO Unix Openserver.  The date 
command is different than in Linux.  Does anyone know offhand of a 
compatible SCO Unix command to do this, or some way in filePro?

Thanks,
Larry Hoover