If you’ve ever heard someone say a meeting is at 1630 and then felt your brain do a small cartwheel, you have met the 24-hour clock. In the United States, we mostly live by the 12-hour clock, with a.m ...

Some travelers are not used to military time or 24 hour clocks, in train stations and museums and airports the 24 hour clock is the usual thing in Europe. So it if it is 13:00 or higher just subtract ...