anyone heard of tradition of starting voyages on new moon

[raaaid]

Well actually I have been partially wrong all this time

if in london they count 79 sunsets and 76 moonsets Phileas Fogg in his travel would have counted one more of each

All this time I have been using a model in which Earth rotates at half the speed the moon takes for a full rotation around earth

In this way the Sun and the Mon have different apparent sense in the sky so my idea would work since Fogg would have counted one more Sun and one less Moon than in Greenwhich in this case

Anyway I still think ancient people could obtain longitude easy what im still figuring out

edit:

The reason we see always the same face of the moon is tidal lock

http://en.wikipedia.org/wiki/Tidal_locking

This is due to the center of gravity and center of mass of the Moon being in different places since gravity varies with the distance SQUARED