Date (example): 2005-05-26 That date's (or most recent) DOW opening: 10458.68 [[Concatenate, with a hyphen: 2005-05-26-10458.68]] md5: db9318c2259923d08b672cb305440f97 [[Split it up into two pieces:]] 0.db9318c2259923d0, 0.8b672cb305440f97 To decimal: 0.857713..., 0.544544... Your location (example): 37.421542, -122.085589 [[Combine integer part of location with fractional part of hash:]] Destination Coordinates: 37.857713, -122.544544 Sample Implementation: http: xkcd.com geohashing {{title text: Saturday is game night.}}