In article ,
Phil Layton writes:

"John Hall" wrote in message
...
The days at LHR must be longer than elsewhere, containing upwards of 180
hours!

Believe me John, they feel that long sometimes! - you have to divide that by
the 650 planes that land there each day

Ah, I see. So the units aren't really minutes but what one might call
plane-minutes.

- perhaps I should have mentioned
that the wind was the attribution on that occasion.

Now you've lost me, I'm afraid.
--
John Hall
"If a man will begin with certainties, he shall end in doubts;
but if he will be content to begin with doubts,
he shall end in certainties." Francis Bacon (1561-1626)