in just about 4 hours for you the heat will cool off and the sun will start to set! sounds like the Perfect time to pick up that .6 miles! and yuppers I know what you mean - last night as I was logging my ride I saw I had ridden 24.98 miles. .98?? well poop - if I'd been paying more attention I'da picked up that .02 miles to make it an even 25.
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"