anyone heard of tradition of starting voyages on new moon

[raaaid]

Yeah¡ thats fine this thread will do:

You go east following Earth rotation and Moon orbit

From a fixed frame, the sun, Earth rotates 28 times, Moon rotates 1 time and you rotate one time in your travel around the world, all with the same sense.

You can take yourself with Earth as a single thing that rotates 29 times, the 28 from earth plus your travel around the world

So then you substract 1 from moons orbit to this 29 figure

So in your travel around the world going east you count 28 moons

How many did they count in Greenwhich?

28 from earth rotation minus one from Moon translation= 27

Seems i had gone wrong

But the bomb in archeoastronomy is that Phileas Fogg in Travel around the world in 80 days counts one MORE sunset than in London and one LESS moonset than in London

What I am figuring now is how the ancient sailors obtained longitude with this knowledge with the simplest method, I would appreciate suggestions

Eulers solution took four hors to obtain longitude with the lunar distance method and though the wikipedia explains wrong the lunar distance method to obtain longitude i could bet its the same I say