I have no strong opinion if we need to put opening hours on path/track or not ; i have sampled curent use in Brussels and there is a mix of pratcice. As simple user i first check if a park, garden etc has opening hours or not it's the more important IMHO , having this in gate is the second level of importance as it can be different (no frequent in park in brussels but in cemetery there is some exemple (to be mapped) . 

I have try add the mentioned line : Oct 1-Mar 31 09:45-16:30; Apr 1-Apr 30 08:15-18:15; May 1-Aug 31 08:15-20:15; Sep 1-Sep 30 08:15-19:15 but that give me a validation error in JOSM ? 




