John, I talked with John Caron about this issue. He believes that the difference results from the different ways that the UDUNITS package and the JODA package handle time (the JODA package handles time much more comprehensively). He also said that the TDS is going to replace the use of the UDUNITS package for time handling with the JODA package. Regards, Steve Emmerson Ticket Details =================== Ticket ID: YJM-623796 Department: Support UDUNITS Priority: Critical Status: Closed