Question: What was the date of the incident thats the film The Aurora Encounter was based on?

Context articles: Muro-Ami
Man date
Aurora Film Corporation
The Aurora Encounter
Aurora, Texas, UFO incident
Incident on Hill 192
Maleficent
Once Upon a Dream (Sleeping Beauty song)
List of Amagami SS episodes
Birthday Gift 2

Muro-Ami ("Reef Hunters") is a 1999 Filipino film that depicts one of the worst forms of child labor in the illegal fishing system.
 The film follows the story of Fredo, a ruthless captain of 150 "Muro Ami" divers, who employ illegal fishing practices, such as pounding and crushing corals to scare fish, driving them towards the nets.
 With a high quota to meet, Fredo forces the divers, who consist mostly of children, to accomplish at least eight dives a day to meet their goal before the millennium.
 Tired and harassed after the burdensome task being given to them, the children have to make do in subhuman conditions in the Muro Ami boat, "The Aurora".
 They sleep in rat-infested bunks and are fed only twice a day.
 Life above the water in the boat is much worse than the suffering the children encounter beneath the sea.
 For every dive, a child's life is perilously in danger.
Man date is a neologism of the 2000s that is used to describe a social situation where two men spend time together one-on-one.
 The men may be any mix of heterosexual and homosexual.
 However, "man date" refers to a platonic social encounter, not sexual implied or actual.
 The term was first spread by a "New York Times" article by Jennifer 8.
 Lee published in 2005, and was the basis for the 2009 film "I Love You, Man".
Aurora Film Corporation is a film production company based in Kolkata, India, and primarily involved in producing Bengali films.
 Aurora has produced and/or distributed several landmark Bengali-language films.
The Aurora Encounter is a 1986 American Weird Western science fiction film directed by the Jim McCullough Sr., written by Melody Brooke and Jim McCullough, Jr., and starring Jack Elam, Mickey Hays, Peter Brown, Carol Bagdasarian and Dottie West.
 It was based on the Aurora, Texas, UFO incident.
The Aurora, Texas, UFO incident reportedly occurred on April 17, 1897 when, according to locals, a UFO crashed on a farm near Aurora, Texas.
 The incident (similar to the more famous Roswell UFO incident 50 years later) is claimed to have resulted in a fatality from the crash and the alleged alien body is to have been buried in an unmarked grave at the local cemetery.
The incident on Hill 192 refers to the kidnap, gang rape, and murder of Phan Thi Mao, a young Vietnamese woman on November 19, 1966 by an American squad during the Vietnam War.
 Though news of the incident reached state-side shortly after the soldiers' trials, the story gained widespread notoriety through Daniel Lang's 1969 article for "The New Yorker" and a subsequent book.
 In 1970 Michael Verhoeven made the film "o.k.", based on the incident.
 In 1989 Brian De Palma directed the film "Casualties of War", which was based on Lang's Book.
Maleficent ( or ) is the antagonist of Walt Disney's 1959 film "Sleeping Beauty".
 She is characterized as the self-proclaimed "Mistress of All Evil" who, after not being invited to a christening, curses the infant Princess Aurora to "prick her finger on the spindle of a spinning wheel and die" before the sun sets on Aurora's sixteenth birthday.
 She was voiced by Eleanor Audley, who earlier voiced Lady Tremaine, Cinderella's evil stepmother, in "Cinderella" (1950).
 Maleficent was created by Marc Davis and is based on the evil fairy godmother from the original fairy tale of the same name by Charles Perrault and The Brothers Grimm.
"Once Upon a Dream" is a song written in 1959 for the animated musical fantasy film "Sleeping Beauty" produced by Walt Disney.
 It is based on Tchaikovsky's ballet of the same name, more specifically the piece "Grande valse villageoise" ("The Garland Waltz").
 It is the theme of Princess Aurora and Prince Philip and was performed by a chorus as an overture and third-reprise finale.
 Mary Costa and Bill Shirley, who were cast in the roles of Princess Aurora and Prince Philip, performed the song as a duet.
"Amagami SS" is a 2010 anime series based on the PS2 Dating sim "Amagami".
 The series follows Junichi Tachibana, a second year high school student from Kibitou High who dislikes celebrating Christmas due to a past incident two years ago when his date stood him up on Christmas Eve which left him heartbroken.
 However, this Christmas will be different as his encounter with one of these six girls, Haruka Morishima, Kaoru Tanamachi, Sae Nakata, Ai Nanasaki, Rihoko Sakurai and Tsukasa Ayatsuji will finally open up his heart to love again.
 The anime adaptation is rather unusual as it is divided into several story arcs where each arc focuses on one of the main heroines who will become Junichi's love interest.
 Two extra episodes which features Risa Kamizaki and Miya Tachibana as the heroines was released on the 13th anime Blu-ray/DVD on April 29, 2011 along with two Short Side-Story OVAs for those who order the first 12 Blu-ray/DVDs.
 On August 13, 2011, a second season of "Amagami SS" was announced.
 The second season, titled "Amagami SS+ plus", aired on January 5, 2012 to March 29, 2012.
Birthday Gift 2 is a 2000 Filipino drama and erotic film and directed by Cesar S.B. Abella.
 Its about the incident thats mostly happen during birthday.