I would like to keep all of my times local. I have set the top drop down on the main page to UTC-4 because that is my domicle time in PHL. when I put airports in the program I just need to make sure that I put the correct UTC converstion right. For eastern time it is UTC-4 and for central times it is UTC-5 right. I understand this will change when the clocks are set back in the fall. Is this what the small box "Apply daylight savings" means? Is that it will automaticall do this for me? I want to make sure all of these time setting are correct before I put lots of flights in there. Also Is there an easier way to find airports UTC conversions besides looking them up one by one on airnav.com?