Updates: Status: Invalid Comment #3 on issue 1487 by npapoyl...@gmail.com: DateAndTime/TimeStamp can't handle times with nanoseconds http://code.google.com/p/pharo/issues/detail?id=1487 DateAndTime and subclasses simply do not deal with nanoseconds, the above code does not fail, but does not take the nanoseconds into account either. This seems to be intented.