| 
 DclGetDate    (DATEQ 1,2,3)  | 
Get the date in today. | 
| 
 DclAddDate    (DATEF 1,2,3)  | 
Add the number of days to date. | 
| 
 DclDiffDate    (DATEG 1,2,3)  | 
Get difference dated a day. | 
| 
 DclFormatDate    (DATEC 1,2,3)  | 
Transform into format that was designated the date. | 
| 
 DclDayOfWeek    (IWEEK 1,2,3)  | 
Get date of the week number. | 
| 
 DclLengthOfMonth    (NDMON)  | 
Get the length (the number of days) in a month. | 
| 
 DclLengthOfYear    (NDYEAR)  | 
Get the length (the number of days) in 1 year. | 
*The corresponding f77 interface name in parentheses.