Does anyone know how Thanksgiving and Christmas vacations work? At in-processing, the AOG information sheet stated that Thanksgiving vacation starts on the 20th of November, whereas, the calendar states the 23rd. The AOG sheet and the calendar do agree that Christmas vacation starts the 21st. Additionally, the calendar uses the acronym "LMD" which I am not familiar with, what does that mean? The reason that I ask is for scheduling of flights. I want to be as accurate as possible so that we don't have to have the possibility of paying for a change in flight. Thanks.