Christchurch International Airport lies in the temperate mid-latitudes at 43.49° S, 172.53° E, on Pacific/Auckland time (UTC+12).
Christchurch International Airport has 3 runways. The longest, 02/20, measures 10,787 ft by 148 ft, which puts the field in the long-haul capable category: widebodies operate comfortably, though the very longest sectors may need a payload trade. Surfaces vary across the field (asphalt, bitumen, grass). 2 of the 3 carry runway lighting.
Runway 02/20 is aligned roughly north-east/south-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 3 runways across 3 different headings, crews can pick whichever best suits the wind.
The runways are not interchangeable. 01/19 is 1,690 ft against 02/20's 10,787 ft, a difference of 9,097 ft, so the shorter one generally takes regional traffic while the longer handles anything heavy.