GPSReferenceWeek# class ansys.stk.core.stkobjects.GPSReferenceWeek# IntEnum Overview# Members UNKNOWN Unknown week reference. WEEK22_AUG1999 22 Aug 1999. WEEK06_JAN1980 06 Jan 1980. WEEK07_APR2019 07 Apr 2019. Import detail# from ansys.stk.core.stkobjects import GPSReferenceWeek