Jan. 19, 2007
12:35 a.m.
Curtis Doty <Curtis@GreenKey.net> writes:
Why this discrepancy between PST8PDT and the equivalent geographically named zones that use PST?
They're not geographically equivalent, since, for example, Seattle and Los Angeles used different rules before 1970. The PST8PDT rule is just a historical revenant, dating back to when the tz database was done a different way. It's not worth worrying much about. As a practical matter, we don't want it to be a link to Los Angeles because, as the northamerica file says, # We do these as separate Zones rather than as Links to avoid problems if # a particular place changes whether it observes DST.