the full moon from norway:


from new zealand:



norway is close to the 'so called' north pole. i believe new zealand is further from the 'south pole', but still very much southern

oh, wow! the moon appears to 'flip' as one travels from north to south.

also, lets see some pictures of the half moon (illustrative only, as i don't know the source):

this is something like how the half moon appears close to a 'pole':


and how it might appear close to the equator:



the angle of the 'shadow line' has changed.
at the equator the line is parallel to the horizon. it does not remain horizontal to the horizon as one travels between the poles.

so when i travel from the north pole to the south pole i will see the moon flip over completely, with a horizontal shadow at the equator.
will my friend that i left behind see the moon 'flip'? or is it the horizon that i am standing on that has flipped?




(the earth is to the foreground and the half moon is further away (bad drawing))

edit: the green arrow example (below) may well 'flip' its apparent orientation as you travel across the equator, but it would remain parellel to the horizon, as it is at the equator, when you travel north or south (in FE). this simple diagram (RE) shows how the moons angular displacement to the horizon would change gradually as you travel from the equator (to +90 degrees to the north pole and -90 to the south).