Riddles

Preface/Disclaimer

Feel bored? Need something to think about?

Here is something to occupy your mind. The solutions are (currently) not on the wiki for a reason, that being to avoid that someone reads them accidentally while clicking through the Recent changes page. Please do not comment the riddles in any way that could spoil the solution for any other reader. Feel free to add your own riddles, but make sure they are actually solvable, well thought-through, and not entirely off-topic. This is not the place to dispose of bad jokes which are already smelly somewhere else.

I'll think of a way to make the solutions accessible without the risk to read them accidentally, maybe on an external server.

(NB: some IRC-dwellers or meetup participants may know the one or another already)

Riddles

Better accessibility at north pole or south pole?

You stand on the north pole or on the south pole, it's tuesday afternoon at Greenwich, and you just wait for the new DJIA to become available. You are willing to set off immediately after the coordinates are calculated, would accept to travel up to 6 nautical miles, which wouldn't take you more than one and a half hour. The coordinates may or may not prove suitable. Since it's all ice anyway, and you are prepared for that, terrain won't probably be an issue.

Are the chances that there is a reachable hashpoint higher if starting from the north pole, from the south pole, or equal for both? Why?

Sunrise midnight combo?

Is it theoretically possible to score a midnight and a sunrise hash at the same point at the same time (let's say: within of two minutes) somewhere on the european mainland? If yes - where?

Nearest point not in surrounding graticule?

Everyone who doesn't live in the exact center of a graticule knows that the nearest point to visit isn't always within of the same graticule. If not, based on distance as the bird flies it usually is in one of the surrounding eight. Actually, it can happen that it isn't even in one of those but you have to pass through a full graticule into the next one to get to the nearest point. Where and how?