I don't think there's a date minimum or maximum. I don't get the whole 'All right you've got to wait three days to call after the date.' If I got a number from a girl I'd call that night. There's no science to it for me. You just do what it is that you feel like doing.
None of us is guaranteed against failure or corruption of any kind witness what's going on in the world in this moment the follies of human nature and the failures of human nature.