but you see , it only opens once every ten or so cycles on the day of the dead , when the sun is just-so in the sky and a tiny frog hops from one lily pad to the next just as he 's gulping down a fly born precisely twenty-six hours earlier when the temperature of the air is exactly seventy-two point three degrees and the wind blows at five miles per hour due east , just-and i mean just ! -as a man with a black soul is nearly decapitated by a deity who is in love with his daughter , and the blood pours on a virgin , lying directly over the tablet , on an altar at the mouth of a giant black jade cave . ''