in my trading career from my first day of trading, i have been using Forex Factory economic calendar which is really comfortable to use and knowledgeable also.
It's good but the forum could do with a makeover so outdatedYou only need forexfactory.com calendar. Period.
this one, also dailyfx. MT5 platform also has inbuild calendar same to others I think they use same source (probably Reuters)I follow Fx Factory. It is quite informative.