I will be in Turkey from 11/23 to 12/1/2015. After entering Turkey, I will have about 7 months left on my U.S. passport. The Lonely Planet travel guide suggested that I only need to have 6 months left, but the Department of State website suggested 8 months. For those of you who have been to Turkey, can you advise if I should go ahead and renew my passport asap? I don't want to be denied entry at the airport for such a technicality.