Science!

BBC NEWS | Science/Nature | Doubt over date for Brit invasion: "The traditional view is that Caesar landed in Britain on 26-27 August, but researchers from Texas State University say this cannot be right.

Dr Donald Olson, an expert on tides, says that the English Channel was flowing the wrong way on these dates.

An invasion of the south coast at Deal on August 22-23 is favoured instead."

I had previously thought that the British Invasion happenned in 1964, when The Beatles first played the Ed Sullivan Show. Shows what I know.