On Monday, in article <betk5l$o0u$1@sparta.btinternet.com>
     spam_dump@btinternet.com "Nick M V Salmon" wrote:

With the same 19,328 results, at 7:40am UK my rank had dropped 3 places to
4100th place - I then sent in 24 results and my rank went back up to 4091st
place - the 'static table' that 'rank' is assesed against must have been
rebuilt between 1:40am & 7:40am UK time...

Makes sense - midnight local time.
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