I encountered the following question in a previous year paper of a graduation-based test.
On a certain night the moon in its waning phase was a half-moon. At midnight the moon will be (choose one of the following)
- on the eastern horizon.
- at 45 degrees angular height above the eastern horizon.
- at the zenith.
- on the western horizon.
I remember looking out of my window and finding the moon on left and sometimes on right. I never imagined that it would be having a fixed pattern. This question is making me think otherwise. But I am unable to decide what that pattern is. Is the position of the moon really determine-able?