May 18, 2012
7:35 p.m.
International law says that any nation has the right to enfoce its own laws within its own territorial waters (12 nautical miles?), which implies that a nation COULD enforce timezone laws within its territorial waters. Many nations encourage it, but don't enforce it. For signatories of the UN Law of the Sea, which is almost everyone except the USA, nations can ENCOURAGE that that their laws be applied as far as 200 nautical miles. But whether any nations enforce timezone laws within territorial waters is up to each nation. But it is certainly common practice to use port time when docked at port. See also: http://en.wikipedia.org/wiki/Territorial_waters