Most of these common holidays are generally just corporate cash grabs or satires on pagan holidays (such as Easter…*sigh*) and can’t really be used in any other useful way other then the fact that other people believe they do… even though they don’t… for a start according to astrology it landed in Aquarius during a wanning moon! Wait… what! I suppose in that instance it could be interpreted as losing independence to gain the opposite… hmm… maybe? But if I were you just base stuff off astrology rather then these common holidays…
But hey just take what I have to say with a grain of salt!