a riddle, wrapped in a mystery, inside a capsule

This message, inside that sea-green capsule, hit me in the head at a party. After much puzzling, I have concluded that "630" is a time, and "695 Park betw 67/68" is an address, although I am still confused because 695 Park, the address of Hunter College, does not fall beween 67th and 68th Streets (it's between 68th and 69th). Why I was chosen to receive this message, or what I should now do with it, remains mysterious.

. . .