Photo date: January 15, 2017. Photographer: Mark Mahin.
I have 49 times previously photographed mysterious orbs aligned with the edge of a US flag, as you can see in this series of photos. As almost all of these cases have occurred at Grand Central Terminal, I was expecting the 50th case would occur there also. Instead it occurred at the back of St. Patrick's Cathedral in New York, as shown below.
There was no fog, mist, rain or precipitation while I was photographing on this night. The air quality listed on airnow.gov was "good," with a rating of 40. The pollen count listed on pollen.com was "low," with a rating of 0.1.