confusing

so today was 70s day and i dont know how the heck people would dress up 70s because its in the middle of 80s and 60s and people said hippies some wore afros which is CLEARLY 80s, wtheck is the 70s, oh well i dressed up regularly and just wore a peace sign around my neck and assumed it was 70s but i knew peace signs are hippy stuff, regular day today, hearing test,and tommorow is pop day, what is pop? explain to me what is that? i need to use my camera again , i miss the joy of taking pictures, i should start using it again,