Yesterday I rang Qantas to check on my baggage allowance, and prefaced my question with "I'm flying on Qantas flight 4 tomorrow night..." at which the passenger agent said "But QF4 leaves in the morning! That flight always used to leave around that time at night but it was changed a few years ago." Gulp! Imagine turning up in the evening, only to find that the flight left 12 hours before.
I'm now packed, ready to go out for my breakfast, and will be picked up by the shuttle at 7.45. All's well, but it could have gone so horribly wrong!
Tip to self: read tickets carefully, remember 24 hour clock and don't jump to conclusions!