Moving Orbs Look Like Venn Diagrams

Often when I photograph a moving orb, the photo will show two overlapping position states that resemble a Venn diagram.  Here is one example from December 19, 2015, taken in Grand Central Terminal.

 Here is another Grand Central example from December 17, 2015:

Here is another example, a previously unpublished photo from May 5, 2015 showing an indoor wall.