Two Islands
There are two mythical islands out in the Pacific ocean, on the same meridian. The north island is 30 degrees north of the equator, and the south island is 30 degrees south of the equator. Both islands are the exact same size and both are 20 feet above sea level. Both are unique because the wind never blows and no clouds are ever seen from either island.
Our RC club wants to build a flying field on one of these islands and we want to maximize the daylight flying time available over the next 100 years.
Which island should we choose?