Is Daylight Savings enabled 880
On Tue, 04 Apr 2006, in the Usenet newsgroup comp.os.linux.misc, in article It doesn't exist as a specific control or checkbox. Use of DST is controlled by selecting the correct local timezone. You posted...
Again, your computer (buttuming it is running Linux) has its internal time, the so called system time, running on UTC which has no concept either of timezones or of Daylight saving time. It is this time that ntp will keep on track. However all time displays, whether on the file creation times or running date, or having a clock display, or cron or at, or ... have that time adjusted from UTC. How much it is adjusted is controlled either by the fileetc-localtime or by the fileusr-share-zoneinfo-$TZ where TZ is an environment variable.
Those files are binary files, compiled into binary form by a program called zic. (I have no idea what it is supposed to stand for). This uses a so called tz file which is an ascii file, which is almost never supplied with the operating system. You can find them either in the glibc source code or can get it from ftp:--elsie.nci.nih.gov-pub-tz*.tar.gz
It your home follows some peculiar scheme of time, (Los Angeles during the winter and Mecca or Jerusalem or Rome during the summer) you can change the appropriate file, and use zic (man zic) to compile the changes and you can use them eg by replacingetc-localtime.
Recently there have been a number of changes driven by the US decision re their timezones, and then all of the Cdn provinces each had to decide whether they would follow or not.