Heroes' first season had a score by Danny Elfman.
Pliny the Elder, in his Natural History, mentions the two equinoxes and the two solstices and gives the lengths of the intervals (values which were fairly correct in his day but are no longer very correct because the perihelion has moved from December into January)
Pre-modern armies, especially in Europe, tended to campaign in the summer months - peasant conscripts tended to melt away at harvest time, nor did it make economic sense in an agricultural society to neglect the sowing season

