1897 April 15 — Late evening. Telegraph repairman Patrick C. Byrnes is operating a railroad handcar about 7 miles west of Cisco, Texas, when he sees a light a little distance from the track on the south side. Knowing there is no farmhouse in the area, he goes to investigate. It is a landed cigar-shaped airship about 200 feet long and 50 feet across at its widest point. Several men are repairing its searchlight, and they tell him that the craft is loaded with several tons of dynamite for bombing Spanish troops and ships in Cuba.

1897 April 15 — Night. An airship with red, green, and white lights lands on a farm near Eau Claire, Wisconsin. Five witnesses see an odd-looking man in a fur coat emerge and walk to a farmhouse belonging to Melvin Bannister, whose dogs are barking fiercely. The stranger points a lantern-like device at them and sends them running. Bannister answers the door and converses awkwardly with the man, who is speaking an odd language, but loans him a hammer,some nails, and a can of skim milk. The man returns the tools, along with a strange coin. The airship takes off with a whizzing sound.

1897 April 15 — 8:15 p.m. Willie Mahon, ex-Marshal French, and other residents of Dunkirk, Ohio, watch a winged object “as large as a wagon bed” pass over the town toward the east. It has propellers on each end, a red light in front, and a greenish-yellow light on the tail. Voices can be heard coming from the object.

1897 April 15 — 9:00 p.m. Residents of Farmersville, Texas, notice a dim light traveling toward the city from the south at 60–80 mph. Thinking it might be a meteor heading toward the Earth, more people gather outside to watch. City Marshal Brown is in the western part of town making his rounds, and the “ship or balloon” passes overhead about 200 feet in the air. Brown can see two men in the object and something like a large Newfoundland dog. He can hear them talking but cannot understand what they are saying.

1897 April 15 — Between 9:00 and 10:00 p.m. A cigar-shaped airship with a row of red lights along the sides passes above Emerson, South Dakota.

1947 April 15 — The US Naval Attaché in Stockholm issues a secret intelligence report, “Sweden: Guided Missiles, Alleged Rockets over Sweden.” Both the naval and military attachés agree that there is nothing to the ghost rocket
episode. No foreign missiles have overflown or landed in Sweden, according to the evidence available. “Swedish officials prefer to dismiss it as an unexplained press sensation.” http://sohp.us/collections/ufos-a-history/pdf/GROSS-1947-Jan-Jun-23-SN.pdf

1974 April 15 — Passengers on a ferry on the Strait of Gibraltar between Ceuta and Algeciras, Spain, see a round, intense torch-like light rise out of the water near a huge rock, travel at low altitude, then fall into the water again. This happens once

1974 April 15 — A photojournalist takes four photos of a round object over A Coruña, Galicia, Spain.

1974 April 15 — 4:30 p.m. Mr. and Mrs. George Torres observe a flat, round object moving to the north over the low hills in back of their home in Tijeras Canyon, New Mexico. It is in the apparent area of the Monzano Nuclear Weapons Storage facility attached to Kirtland AFB. The object changes course to the east at an altitude of 2,000 feet and appears to be 50–75 feet in diameter. It is rotating silently on a central axis. The object turns abruptly to the south, passes behind a small mountain peak, turns east again, and vanishes over the Manzano Mountains. http://files.afu.se/Downloads/Magazines/United%20States/APRO%20Bulletin/APRO%20Bulletin%20-%201974%2009%2000%20-%20September-October.pdf

1984 April 15 — 12:00 midnight. Some 20 witnesses (farm workers, a police officer, venture scouts) at Llangernyw, North Wales, see a pink-orange ball that drifts to the ground and explodes in a shower of purple sparks. Out of the shower emerges a white disc that appears to land out of sight behind a ridge. A large army helicopter and two military trucks apparently perform a search of the area beginning at daylight.

1989 April 15 — 5:30 p.m. A father and his 16-year-old son watch from their front lawn in Novato, California, a slowly descending object shaped like “two spheres connected by together like a stem.” They are golden with a white halo around them. Through binoculars, they can see four smaller objects, golden discs, maneuvering near the original dumbbell-shaped UFO. The father notes a “strange absence of kids and dogs at the time.”

2004 April 15 — Ademar José Gevaerd’s Brazilian Ufologists Commission launches a campaign called “Freedom of Information Now!” with the goal of convincing the Brazilian government to publicly release official information on the Varginha case, the Official Night of the UFOs, and the Trindade Island photos.