Thank you for all of the off-topic replies, but no one has answered the original question. I am not complaining about the lack of saver awards (I've already booked my first saver award to LHR for next May,) just wondering why, for example, there are many first saver awards available for LAX-LHR for May 25 and none for many of the days before. If anyone actually knows the answer, I am just curious....