Buy the 2015 Old Farmer's Almanac!
"Predawn" means an hour or so"Predawn" means an hour or so before morning twilight. You can find your local twilight times in The 2013 Old Farmer's Almanac or here at our sunrise/sunset tool:

2015 Garden Calendar2015 Weather Watcher's Calendar2015 Recipes Calendar2015 Engagement Calendar 2015 Everyday Calendar2015 Country CalendarNew Year Cross StitchLobster Rope Doormats