> IOW, US states are allowed to disregard the observance of DST, but they can't change their time zone without federal congressional approval. Interestingly, t

> IOW, US states are allowed to disregard the observance of DST, but they can't change their time zone without federal congressional approval. Interestingly, that seems to be the exact opposite of EU where countries can choose their own timezones but (currently) have to observe DST.