Wrong hour intervals

[aragaer]

While hours themself are calculated correctly, hour intervals should not start with those hours, but instead surround them.

Reason is that "Hour of " could refer to exact point of time (which is correct now) or it could denote a whole interval around it. While intervals between hours split days (and nights) into equal parts, intervals surrounding those hour points do not have to be equal. For hours of the Hare and the Cock the "point" is not even in the middle of the interval.

This requires certain changes in calculation and representation.