lat/lon to time offset database

[Clive D.W. Feather]

Tim Thornton said:
> Actually neither, you should use the international boundary line for this. 
>>  Also, when you're on going through the channel tunnel do you go from
>> being closer to Paris than you are to London only when you've left Calais?
>> Or before you get to Dover?

Actually, all of Eurotunnel - including the parts in the UK - use French
time. The actual time change happens at the boundary between Eurotunnel and
Network Rail track, 108.56km from London (and 3.04km from the UK portal).

-- 
Clive D.W. Feather          | If you lie to the compiler,
Email: clive at davros.org     | it will get its revenge.
Web: http://www.davros.org  |   - Henry Spencer
Mobile: +44 7973 377646