Quick question: doesn't a new question warrant a new Subject: line? We've been going quite a while on these two ... I think that one should use a function specially provided (tzsetwall()) to set the time to "wall clock" time. This could unsetenv("TZ"), or read the "localtime" file for appropriate values of "TZ", or whatever. I like the latter approach, myself ... probably requires unsetenv() and setenv() to do right, though. The point is that we should hide as much of the messy detail as possible inside the time library/module. Joe Yao jsdy@hadron.COM (not yet domainised) hadron!jsdy@{seismo.CSS.GOV,dtix.ARPA,decuac.DEC.COM} {arinc,att,avatar,cos,decuac,dtix,ecogong,kcwc}!hadron!jsdy {netex,netxcom,rlgvax,seismo,smsdpg,sundc}!hadron!jsdy