> If I search for flights from February 24 to February 24 I don’t expect the empty interval. The expectation depends on how you define "from" and "to" :-D Sin

> If I search for flights from February 24 to February 24 I don’t expect the empty interval. The expectation depends on how you define "from" and "to" :-D Since the HN community is quite mathematically-minded, I'd expect there all four possible kinds of definitions in the inner minds of HN members. :-D