(Note that this is deliberately not posted in the Noda Time blog. I reckon it's of wider interest from a design perspective, and I won't be posting any of the equivalent Noda Time code. I'll just say now that we don't have this sort of craziness in Noda Time, and leave it at that...) A few weeks ago, I was answering a Stack Overflow question when I noticed an operation around dates and times which should have been losing information apparently not doing so. I investigated further, and discovered some "int[...]