Mr. Olson, I'm wondering about line 920 in 'tzparse()' in 'localtime.c': 917 load_result = tzload(TZDEFRULES, sp, FALSE); 918 if (load_result != 0) 919 sp->leapcnt = 0; /* so, we're off a little */ 920 sp->timecnt = 0; 921 if (*name != '\0') { 922 if (*name == '<') { 923 dstname = ++name; It appears to have the effect of inhibiting the application of DST per '/usr/local/etc/timezone/posixrules' when a TZ string such as TZ="EST+5EDT" is used. If the line is removed DST is applied. The effective default if 'posixrules' is not readable, per TZDEFRULESTRING, is TZ="EST+5EDT,M4.1.0,M10.5.0" which does lead to the application of DST. Also RHEL 4.3 (CentOS 4.3) appears to apply DST when TZ="EST+5EDT". Does 'tzparse()' behave in this manner by design? Thank you for your efforts and contribution of the excellent. zone package. Sincerely, David Lawless