On the summit at 1 pm.  Our friend, Dave, somehow didn't show up, and we were faced with the prospect of getting hundreds of pounds of gear down the eight mile Yosemite Falls  trail.  We had eaten the last of our food at 6:30 that morning (a "huge" 300 calorie breakfast for each of us, plus Mark had his six lemon drops, of course).  Two sunburned tourists came straggling over the summit dome looking cooked, and we traded them some of our water for two sandwiches.  On the strength of those sandwiches we were able to hike light loads out, and we reached Camp 4 at 6 pm that evening.