For the JHS 9th grade school trip, we went to Sydney and Melbourne, Australia. The trip lasted seven days (June 7-13). The first and last day were only trips to and from the airport, which ought not count. Both long flights were overnight, and seven days means six nights, but two of these were on airplanes, which means the other four of which were in hotels. As such, though we spent seven days, it felt much more like a five day journey. Last year I went on the same trip — see here for more on that.