AZ did it as well, but only after the state finally recognized MLK day as a holiday. AZ was the last state to do so.
not to get off topic but if you're seriously considering property up there, do some serious looking into the water situation of any land you buy. Take it from me, first hand... I have to have water hauled to my property as i happen to own some record breaking land that happens to be sitting on/sharing an aquifer with the prestigious title of highest level of natural arsenic in the nation... Yippy!!!