https://community.hpe.com/t5/operating-system-hp-ux/information-about-ajust-clock-for-daylight/m-p/2832877#M89322 Since you don't mention your timezone, the best I can do is tell you where to look. First do a man 4 tztab to understand the format of the file and then examine /usr/lib/tztab to find the matching entry for your ${TZ}.<BR /> Thu, 24 Oct 2002 16:49:27 GMT A. Clay Stephenson 2002-10-24T16:49:27Z https://community.hpe.com/t5/operating-system-hp-ux/information-about-ajust-clock-for-daylight/m-p/2832876#M89321 Hi,<BR />Somebody know at what time is the automatic change to adjust clock for daylight.<BR /><BR />thank in advance. Thu, 24 Oct 2002 16:36:40 GMT https://community.hpe.com/t5/operating-system-hp-ux/information-about-ajust-clock-for-daylight/m-p/2832876#M89321 Lino Martinez 2002-10-24T16:36:40Z https://community.hpe.com/t5/operating-system-hp-ux/information-about-ajust-clock-for-daylight/m-p/2832877#M89322 Since you don't mention your timezone, the best I can do is tell you where to look. First do a man 4 tztab to understand the format of the file and then examine /usr/lib/tztab to find the matching entry for your ${TZ}.<BR /> Thu, 24 Oct 2002 16:49:27 GMT https://community.hpe.com/t5/operating-system-hp-ux/information-about-ajust-clock-for-daylight/m-p/2832877#M89322 A. Clay Stephenson 2002-10-24T16:49:27Z