Whenever you want, lol. Concidering that you are probably trading golem coins without any leverage there is no need to chech smaller timeframes in order to track smaller movements (ofc if you are not a golem whale). But if you are looking for the best moment between those to hights then the earliest one will be the best. As I see BTC had a significant pump and golem had much slower  growth. But anyway it is easy (and useless) to make such "reviews" while looking on past data.