Also if he was towards the equator would he travel faster in time than if he traveled near the poles? Since basically the equator rotates faster than at the poles (that is why all of the NASA and eurpoean space agencies try to launch as close to the equator as possible.)
Plus the faster he gets does he go farther back in time? EX. it takes 88mph to go from 1985 to 1960 something. So to go to ancient times, does it take greater amounts of energy and speed, or does it take the same amount of energy and speed? Like if they wanted to go back to the triassic, would they have to get the energy output equal to the sun?

P.S. Stupid north american here, but what is a "brolly"?

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GIYUL :-)
"It takes Thousands to fight a battle for a mile, Millions to hold an election for a nation, but it only takes One to change the world." - Dan Sandler 2002