When Beth goes to visit Barney B's Customs, Barney asks Beth to pass on the message "the subject's meant to have a Skype call at 9:00 p.m. tomorrow, that's 4:00 p.m. our time". 4:00 p.m. would be correct for Eastern time in the US, but the scene takes place in Allenville, AZ, which is in Mountain time, so it ought to have been "2:00 p.m. our time".
When the action is supposed to be set in the US, the cars they are driving have the driver's seat on the right side (like in the UK) instead of the left (like in the US).