一道英语听力题(实际是地理知识)请详细讲解一下,
W:Thereare4standaredtimezonesinNorthAmerica,thereisPacific,Mountain,CentralandEasternstandardtime.N:Thatisrightanddonotforgetthereisanhourdifferencebetweeneachtimezone.Q:WhattimeisitinNewYorkwhenitis10:00a.minCalifornia?