Mother Nature called, she want's her damn hour back! Come this Sunday, her hour she will have! Happily, or begrudgingly it must go forward - you'll want to wind those wall clocks one whole hour northward! Should you honest-to-goodnessly need to cross reference for accuracy - the Official Atomic Clock is razor sharp with spot on adequacy! So now that you've been so graciously told - comply with Mother Nature to avoid her vicious scold!