What is the geographic longitude of a body whose GHA is 215°15'?

Correct Answer: Option C — 144°45'E

According to Bowditch, geographic longitude equals Greenwich Hour Angle (GHA) when the celestial body is west of Greenwich, but if GHA exceeds 180 degrees, longitude in degrees West is 360 degrees minus GHA, and longitude East is GHA minus 360 degrees. Here, 360 minus 215 15' equals 144 45' East.