Gautam Buddha International Airport lies in the temperate mid-latitudes at 27.50° N, 83.41° E, on Asia/Kathmandu time (UTC+5:45).
Gautam Buddha International Airport has 1 runway. The longest, 10/28, measures 9,843 ft by 148 ft, which puts the field in the widebody capable category: twin-aisle aircraft can use it, and narrowbodies have length to spare. The surface is asphalt. It is 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. Every runway here shares that east/west alignment, so a strong crosswind means a crosswind landing rather than a switch to another strip.