I have a flight tomorrow at 05:30 (local time) from Lisbon. This translates to 06:30 Paris time. Given the recent changes, when is the earliest I can call to change the flight to one at 12:20? Is it 14 hours before the initial departure? Does it have to be after midnight to be the same day? 14 hours before the new flight? I called the TA, and they checked for five minutes and then told me it has to be after midnight of the day of departure, local time. Which is not ideal, since I would have to get up in the middle of the night...