People could tell time 2000 years ago. In fact, people could tell time 5000 years ago. A sundial is one obvious way; there may have been others too.--[[User:Aschlafly|Andy Schlafly]] 15:33, 17 April 2011 (EDT) | People could tell time 2000 years ago. In fact, people could tell time 5000 years ago. A sundial is one obvious way; there may have been others too.--[[User:Aschlafly|Andy Schlafly]] 15:33, 17 April 2011 (EDT) |