Photo date: July 22, 2016. Photographer: Mark Mahin.
The composite photo below combines two photos I took showing an arch at Grand Central Terminal in New York. In both we see a mysterious orb aligned with the top of the arch. One of the orbs is blue, and another is green. The most common orbs I photograph at this location are white and blue, although I also get quite a few cases of green orbs, as well as purple and pink orbs.