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Greg, You do not have to change dattim format entries from 5.4. to 5.6. The dattim is yymmdd/hhnn not 4 digit years. GEMPAK handles 4 digit years internally, but the format for dattim entry in the programs is still the same. It assumes that if yy < 20 then it is 20yy, otherwise 19yy. Steve Chiswell On Thu, 15 Mar 2001, Greg Stossmeister wrote: > Steve, > I have some scripts that I had been formerly running under gempak5.4 > with no trouble. I tried updating those script now to use gempak5.6.a > and am having some trouble. I'm using a date/time for example of > 20010315/0000f000. Gempak complains: > > [TG -1] Invalid date or time. > [TG -5] Invalid time range. > [TG 0] > > I find if I set dattim=010315/0000f000 gempak will produce the plot - > what gives? I though Gempak could handle 4 digit years now. > > Greg >