Earth has only one natural satellite.
Full Moon, but unless you live in the tropics the moon cannot be directly overhead.
Because they're ignorant, whoever "they" are. The term "New Moon" does not mean the Moon is directly overhead, it means that the Moon is (approximately) between the Earth and the Sun.
The New Moon is directly overhead in locations close to the equator but even when the New Moon is directly overhead it won't be visible because the shadowed side of the moon is facing the Earth. Also when the New Moon is directly overhead, the sun will also be close to overhead as well, as the moon is closest to the sun during the New Moon phase.
To be directly overhead the moon must be at the correct latitude. For some locations this is simply not possible because the moon's orbit is nearly in the plane of the equator. For other locations, it is necessary to know the latitude of your location.
18.2
Almost 390 K.
Buzz Aldrin was the Lunar Module Pilot for the Apollo 11 mission which landed the first men on the moon on July 20, 1969. Michael Collins, the 3rd member of the crew, orbited overhead while Armstrong and Aldrin landed on the moon and walked on it.
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Oh, isn't that just beautiful to think about? Well, the moon will be overhead at different times depending on where you are. Maybe take a moment to pause and enjoy the magic of looking up at the moon whenever it graces you with its presence.
Yes because the moon does not change size.
In the sky overhead, over a period of 29.5 days.
You will weigh slightly less.