Argentina and Chile are two hours ahead of Eastern Standard Time (EST). While in Antarctica, National Geographic Explorer, National Geographic Endurance, and National Geographic Resolution recognize the local time in Argentina. Our itineraries cover one time zone (Argentina). If you prefer to use Coordinated Universal Time (UTC), Argentina is UTC -3:00 hours during this expedition and the ship observes this time while in Antarctica. For more information, see http://www.timeanddate.com/time/map/.