Only a Few Time Zones of Difference

(Talking about moving to a town in Washington with my mother) Me: We're moving to Pullman, Washington. Mom: Oh, that nice. You've got to go see the Lincoln Memorial and the other things there. Me, staring at my mother: Pullman, Washington... Mom, clueless: Yeah, Washington is our national capital. Me, shaking head: Our capital is Washington D.C.. We're moving to Washington state. Mom: There's a difference?