so the latest on changing a booking on the website:
i am american, so first the online calendars start on a sunday. none of this monday business.
well i needed to change a flight to leave on a wednesday...but nothing was available. so i was OK with thursday. i click thru, make the change and it confirms me on the flight i wanted...but on WEDNESDAY which was originally not an option. worked well for me but i thought it was weird and i was not paying attention.
i just did this again for a different flight and same issue: if i click on a thursday as it appears on the screen...when i click confirm--it confirms i selected WEDNESDAY. if i click friday it confirms THURSDAY.
basically i think this boils down to differences in the US calendar v the UK/EU calendar--but i sense there will be many people who have no clue this is happening to them.