Thessaloniki Macedonia International Airport lies in the temperate mid-latitudes at 40.52° N, 22.97° E, on Europe/Athens time (UTC+3).
Thessaloniki Macedonia International Airport has 2 runways. The longest, 10/28, measures 11,286 ft by 164 ft, which puts the field in the long-haul capable category: widebodies operate comfortably, though the very longest sectors may need a payload trade. The surface is asphalt. Both are lit for night operations.
Runway 10/28 is aligned roughly east/west, which is the clearest hint you get about the prevailing wind here: runways are built to face the wind that blows most often, because aircraft take off and land into it. With 2 runways across 2 different headings, crews can pick whichever best suits the wind.
The runways are not interchangeable. 16/34 is 7,907 ft against 10/28's 11,286 ft, a difference of 3,379 ft, so the shorter one generally takes regional traffic while the longer handles anything heavy.