Coordinates on Mercury | {latdegabs}° {latminint}′ {latsecdec}″ {latNS}, {londegabs}° {lonminint}′ {lonsecdec}″ {lonEW} ({latdegdec}°, {londegdec}°) | Type | {type} | Zoom | {zoom} |
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Longitude on Mercury increases in the westerly direction. A small crater named Hun Kal provides the reference point for measuring longitude. By definition, the center of Hun Kal is 20° west longitude.[1]