| 5/31/91 13:00 | Marshall | MI | USA | Disk | 10-15 seconds | Very low-flying, metallic saucer-shaped craft with multi-colored panels by major Michigan roadway in daytime. | 1/21/08 | |
| 5/31/91 11:00 | Plano | TX | USA | Circle | 10 minutes | Motionless small bright white dot in noontime sky northwest of Plano, Texas (DFW) sky vanished in an instant. | 6/2/17 | |
| 5/30/91 09:10 | Las Cruces | NM | USA | Fireball | 10-15 seconds | a hollow blue ball of lighting that turned to a fireball then took and umbrella shape and loomed for a second then disapeared. | 7/16/06 | |
| 5/25/91 21:00 | Lone Pine | CA | USA | Light | 60 Seconds | Mysterious Green Light following US-395 near Lone Pine | 12/9/00 | |
| 5/25/91 21:00 | Hampstead | NH | USA | Disk | 2 min | It sailed through the sky directly above our back yard without any kind of noise. | 12/19/03 | |
| 5/20/91 21:00 | Northfield | MN | USA | Formation | 8 minutes | 7 UFOs flying in a train formation seen in Northfield MN, 1991 | 4/28/01 | |
| 5/20/91 04:00 | Atlanta (however, I have heard entire East Coast) | GA | USA | Light | 1 hour | "false dawn" | 1/28/99 | |
| 5/19/91 00:00 | Epernay (near) (France) | | France | Other | 2-3 hours | When penetrating to the inner core of the aliens light signals were sent by you! | 2/1/07 | |
| 5/17/91 05:00 | Dayton | OH | USA | Oval | 2 min | Ufo seen near Wright Pat airforce base | 8/7/07 | |
| 5/15/91 21:30 | Twin Falls | ID | USA | Teardrop | 7 seconds | Object was going from east to west. On a very slight down word angle. It was bright green. No fire debris. But a heat distortion. | 1/26/15 | |
| 5/15/91 09:41 | Central Texas | TX | USA | Light | | Mother relates story of helicopters observing circle of blue lights on ground.
My mother told me this story a few years ago and I ju | 3/7/98 | |
| 5/15/91 04:05 | Sparwood (Canada) | BC | Canada | Light | 5-6 minutes | I observed three stationary interconected lights that changed intensity and made several right angle movements before moving off. | 12/16/05 | |
| 5/13/91 23:30 | Pittsburg | TX | USA | Unknown | 5 minutes | Random flashing multicolored lights, with one spotlight, shining down onto my house. | 5/12/10 | |
| 5/13/91 22:00 | Sechelt (Canada) | BC | Canada | Disk | 2-3 minutes | You spend a good part of your life a non-believer, until one day you see something that will change your view forever!! | 2/5/03 | |
| 5/11/91 22:30 | Phoenix | AZ | USA | Circle | 2 minutes | Glowing white sphere moving rapidly west to east high rate of speed and absolutely silent. Phoenix PD confirmed sightings | 5/9/03 | |
| 5/11/91 14:00 | Huntington Beach | CA | USA | Other | 2 minutes | Burning Magnesium Orbs | 7/8/04 | |
| 5/10/91 16:00 | Reading | PA | USA | Light | 3 | bright light approaching aircraft, aircraft responds with "something" | 7/16/06 | |
| 5/10/91 02:00 | Peru | IN | USA | Disk | 10 minutes | Saucer lights up farmhouse, tree, and puts on a light show for two unsuspected teenagers. | 2/1/07 | |
| 5/8/91 04:30 | Lake Mead | AZ | USA | Light | 1 minute | me and brother suddenly awoke on top of houseboat witnessed blue/white "saucer in light" observed for 30 seconds then watched it depart | 8/30/99 | |
| 5/5/91 20:30 | Grants (southeast of) | NM | USA | Light | 2 minutes | bright light travelling normal speed stops above us for minutes then shoots off in nighttime NM sky. | 8/28/03 | |
| 5/2/91 02:15 | Mayfield | KY | USA | Teardrop | Cluster of Blue Lights | 9 objects close together. Blue Hue. | 1/28/99 | |
| 5/1/91 21:00 | Milledgeville | GA | USA | Disk | 1 minute | My sister and I witnessed a disk shaped UFO with many colored lights hovering over the golf course we lived across from. | 1/31/11 | |
| 5/1/91 20:00 | Massapequa | NY | USA | Other | thirty seconds | A large bright hexigon shape over Massapequa NY | 1/10/09 | |
| 5/1/91 14:00 | Garden Grove | CA | USA | Sphere | 45min+ | Lazer like fire from staionary objects in sky! | 2/12/04 | |
| 5/1/91 03:00 | Escondido | CA | USA | Cigar | 2 seconds | Saw a blue shaped oblong (cigar shaped) object which was stationary at first and then acclerated at an incredible speed and disappeare | 1/28/99 | |
| 5/1/91 01:00 | New York City (Brooklyn) | NY | USA | Circle | 5 minutes | In the summer of 1991 around the months of May to September, the New York Post had a small paragragh printed, that anyone who thought t | 11/28/07 | |