I had a conversation with a ranger about start times some years ago. He maintained that you must start from the Portal at midnight. It was because permits begin at the Portal not at Lone Pine Lake.
Who knows what kind of answer you might get today? To be certain, you should contact the ranger station for current policy.
That said, we left the Portal at 10PM twice in separate years. It is unlikely that there will be rangers checking for early starting scofflaws.
Last edited by RichardK; 06/15/22 07:29 AM.