DST:   Daylight Saving Time - See [http://webexhibits.org/daylightsaving/] 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 [timezone]s there.

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[Category Date and Time] | [Category Glossary]