Group of about 7 UFO's, with a leader to the side, and a cluster to its north.I went to take a rest from the flea market, and was shaded by a large bush. I laid flat on the grass and had amber driving glasses on, in addition to my myopia lenses. I was looking straight up to the zenith, watching airplanes from LGA airport, etc.. The sun was almost but not quite overhead, and shaded by a leafy branch, so I was able to gaze into the blue without the sun against me. The clouds were minimal and there was a slight haze and I had a little coffee to drink and was relaxing. Slowly, but suddenly, like a ghost appearing, there was a distant craft proceeding westward and slightly northward at an angle, slowly creeping. It had a distinct boxy appearance almost like it had "solar panels" on both sides, and there was a faint blinking sidelight hard to make out because of the bright conditions. It was at the limits of my visual acuity to make out any detail, but it was optical in nature as I was able to play with the image using my fingers in a triangle pinhole lens and saw it refract. Soon after this, to my right (north), a group of approximately 5 (or more) of the same "craft" appeared in a rough and slowly jiggling polygon along with an extra slightly off to one side ("apple"). This cluster slowly appeared out of nothing, and they too had faint blinking lights. There was no entry direction, and were ghostly in appearing. It stayed like this for about 2 minutes and then as if on cue, all of them slowly faded back into nothingness without any abrupt motions. The lone craft from the beginning was proceeding in its same linear direction and still visible, and then that, too, slowly disappeared in a ghostly fashion. At the end of this, I checked the sky without the amber lenses and saw that the area where there was the cluster of the craft was blue without clouds and only some haze as it was a hot day. The lone craft was in an area of very thin cloud. They did not act like drones and there were too many of them, and they just appeared and disappeared. They did not get bigger or smaller; there was no noise and they all looked the same. I had thoughts of some kind of refraction from a remote area, but the behavior and the coincidences of this happening don't seem to fit as being manmade, which is why I make this report to you.