Interesting :=] I'm hopeless at visualising things and rotating objects mentally, but I had a look on google.
Apparently, the moon is always in the sky at some point at night, where ever you are. Sometimes, though, it's not visible because the position of the sun is exactly wrong i.e. a new moon.
But but but :=] I was just thinking if the moon's visible for you at mid-day in London then for me in NZ (which is pretty much the exact opposite side of the planet) it can't possibly be visible too at the same time (midnight here, ignoring daylght savings lol.) The earth rotates on its axis once every 24 hours and the moon goes around the earth once every 29 or so days. I can't see how there's enough time for either the earth's rotation or the moon's orbit to make it so the moon appeared in my sky at any point that night.
Fuck, my brain hurts now :=] It's really confusing. One website I checked told me that this diagram
should make it relatively clear. As clear as mud :=]