DST: Daylight Saving Time - See [1] for info on the history, rationale, laws, and dates relating to Daylight Saving Time.Not all locations observe DST. For instance, reading http://www.infoplease.com/spot/daylight1.html , one reads (at least during early Feb 2007) that most of 2 US states, as well as 4 US territories do not observe DST. Note that this page also discusses DST in other countries as well.I used to hear, back in the olden days, people referring to Indiana as being the only place that didn't observe DST. Since 2005, that state does observe DST - but the state is split across two time zones, so software will still have problems dealing with timezones there.See also: