Folks,There’s a minor error in the python wrapper pyhelpers.py function absolutedate_to_datetime. The 7th argument to the python datetime constructor is microseconds not milliseconds. See https://docs.python.org/2/library/datetime.html# .The fix is to change multiplying by 1000.0 to 1000000.0The code from pyhelpers.py:def absolutedate_to_datetime(orekit_absolutedate): ''' Converts between orekit.AbsoluteDate objectsand python datetime objects (utc)'''utc = TimeScalesFactory.getUTC()or_comp = orekit_absolutedate.getComponents(utc) or_date = or_comp.getDate()or_time = or_comp.getTime()seconds = or_time.getSecond()return datetime(or_date.getYear(),or_date.getMonth(),or_date.getDay(),or_time.getHour(),or_time.getMinute(),int(math.floor(seconds)),int(1000.0 * (seconds - math.floor(seconds)))) # glenn: change 1000.0 to 1000000.0Glenn