In Fallout 3, the clocks are all stopped at the same time as each other, ostensibly due to the EMP from nuclear bombs burning out their circuitry-- but in New Vegas, the clocks are ALSO all stopped at the same time as each other, and the same time as the Washington, D.C. clocks. In our own universe, Las Vegas is in Pacific Time; D.C. is in Eastern time. Shouldn't the stopped clocks be four hours apart? (Of course, this doesn't take into account the time it took for the bombs to arrive...)