Depends on your point of view. If you are in aviation and you are headed north it is 360. (think about it... ever hear of "runway 00"? no you hear "runway 36" Pretty sure that in maritime situations it is refered to 360 as well. I prefer hearing "heading 360" vrs " heading 000"
Maybe it is a country by country thing... or a trade by trade thing...
but I am pretty sure its 360 universal and not 000 or 0deg
oh and by the way... there are 360 degrees.... not 350 like your post says