0 - Do not observe daylight savings time
1 - Observe daylight savings time
When you select this option, the created/modified time for documents created or modified from the first Sunday in April through the last Sunday in October are time-stamped one hour later than the server's system time. This option lets you adjust for daylight savings time without changing the actual system time.
See the settings DST_Begin_Date, DST_End_Date, and DSTlaw for additional ways to adjust the time stamp for daylight savings.
NOTE: Time zone and DST values on the UNIX and OS/2 platforms As of R5.0.6 Domino R5 will get time zone and Daylight Savings Time (DST) information from the operating system on UNIX and OS/2 platforms. On OS/2, it is important that the TZ variable be set in the config.sys file. If you do not observe Daylight Savings Time, do not put a Daylight Savings abbreviation in the TZvariable. On UNIX, Domino will use the difference between localtime & gmttime, and the value of the isdst field from localtime, to determine the time zone. On both platforms,localtime should always be correct before installing or starting a server.