Good advice Steve,
One minor correction: Simio returns a date with a 4 digit year, so you would actually have to use:
String.Substring(String.FromDateTime( TimeNow ),1,10) to get the date in a MM/DD/YYYY format
To get months of the year would be (color added to highlight components):
String.ToReal(String.Substring(String.FromDateTime( TimeNow ),1,2))
Of course if you wanted something simple like hour of day, you could take advantage of TimeNow being in hours and use a numeric expression like:
Math.Remainder (TimeNow, 24)
If you want to limit the precision add use of the Math.Floor or Math.Round functions like:
Math.Floor(Math.Remainder (TimeNow, 24 )) to display integer hour or
Math.Round(Math.Remainder (TimeNow, 24 )*100)/100 to display hundredths of hours.
Note that all of these can be used in Status Labels and Floor Labels as in the attached example.IllustrationOfTimeFormats.spfx
You can see more examples if you look at the Floor Labels in the Simio Example named HospitalEmergencyDepartment.