This article applies to Domain Time II.

Last updated: 1/3/2007

Question

How do changes in Daylight Saving Time or time zones affect Domain Time?

Answer

Domain Time both obtains and provides time using Universal Coordinated Time (UTC). It is unaffected by time zone settings on the local machine or by changes in Daylight Saving Time. No changes or updates to Domain Time are required for changes in time zones or Daylight Saving Time.

Background
Operating systems such as Windows, UNIX, Linux, and others use UTC time for their internal system clock. The OS then calculates what time to display to the user or applications by applying local time zone settings to the UTC time. The time zone settings used are set on the individual machine (such as in Window's Date and Time Control Panel applet).

Changes in Daylight Saving Time are specific to particular time zones and local laws. These laws change periodically, so you will need to contact the operating system vendor to obtain time zone updates for your locality.