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An occultation is defined as three objects aligned such that one object as viewed from the second is obscured by the third. So during a solar eclipse the Moon is between the Earth and Sun. You would need to be standing on the Sun though for the Moon to occult the Earth i.e. for the Moon to obscure the observation of the Earth from the Sun (a word of advice: take plenty of ice).
What these pictures try to show is
1. that the moon is rotating about an axis through its centre
2. that this rotation is anti-clockwise
However I have pointed out that you have to consider the timestamps, which then indicates an apparent clockwise rotation of the moon about an axis through its centre.
This apparent clockwise rotation has been known and understood for years. It has nothing to do with shadows. It has everything to do with the orbit of the moon at a 5 degree angle to the ecliptic. The moon rises and sets but it does not keep its polar axis vertical as it rises and sets. It keeps its polar axis at right angles to its path (see experiment with palm of hand above).
But speaking of shadows, the line dividing the lit and unlit regions of the Moon is called the terminator. That will move during the night because the Moon is moving up and down relative to the Sun and is being illuminated by the suns rays which, due to the huge distance, are approximately parallel. If you are going to do the palm experiment imagine the sun being at right angles to your palm. As you move your palm in front of your face along the orbit inclined at 5 degrees you will see that the terminator can move along your palm and that certain regions to the top of our palm that were unlit can now be lit.
This is very difficult to explain in words. I'll try to find a site that explains it graphically. If not I'll knock something up, draw some diagrams, digitally photograph them and post the sequence here.