I The DST column shows the months in which Daylight Saving Time, a.k.a. Summer Time, begins and ends. A blank DST box usually indicates that the location stays on Standard Time all year, although in some cases the location stays on Summer Time all year. If a location is currently on DST, add one hour to the time in the Time column. Notes The airport serves Washington, D.C., but it is located in the U.S. state of Virginia. IZM is common IATA code for Adnan Menderes Airport and Çiğli Air Base . References - includes IATA codes Aviation Safety Network - IATA and ICAO airport codes Great Circle Mapper - IATA, ICAO and FAA airport codes I