Brian, > I think I may know what's going on. The real question is... when the > ldm queries the system clock, it it assuming the system clock is running > on UTC? And... if the system clock returns a day which is in the > future, will (\z:mm) return the previous month? It's actually a little bit more complicated than that, but you're on the right track. I've created a beta release of the LDM that should fix this problem. It's available at ftp://ftp.unidata.ucar.edu/pub/ldm/beta/ldm-6.6.4.1.tar.gz Would you be willing to try it? We're using it here operationally and it seems to be stable. Regards, Steve Emmerson Ticket Details =================== Ticket ID: LEF-282186 Department: Support LDM Priority: Normal Status: Closed