Question: When did the explorer reach the headquarters location of the group Study in Brown's record label is part of?

Context paragraphs:
paragraph_text: Jam Session is a live album by American trumpeters Clifford Brown, Clark Terry and Canadian trumpeter Maynard Ferguson featuring tracks recorded in early 1954 and released on the EmArcy label. The album was recorded at the same session that produced Dinah Washington's "Dinah Jams" and is often credited to the Clifford Brown All Stars.
title: Jam Session (album)
paragraph_text: Rebelle Records AB is a record label founded by Björn Afzelius in 1988. The name is a convergence of his two daughters' names "Rebecca" and "Isabelle". The company, which holds the rights to all of Afzelius music is now located in Snekkersten, Denmark.
title: Rebelle Records
paragraph_text: Honey in the Lion's Head is an album by folk singer/guitarist Greg Brown. It is his second release on the Trailer Records label.
title: Honey in the Lion's Head
paragraph_text: Study in Brown (EmArcy Records, 1955) is a Clifford Brown and Max Roach album. The album consists predominantly of originals by members of the band. The songs "Lands End", by tenor saxophonist Harold Land, and "Sandu", by Brown, have gone on to become jazz standards. The song "George's Dilemma" is also known as "Ulcer Department". Brown's solo on "Cherokee" is among the most acclaimed solos in jazz.
title: Study in Brown
paragraph_text: Jive Records was an American record label under the RCA Music Group formed in 1981 by Zomba Records. Formerly headquartered in New York City, the label was best known for a string of successes with hip hop artists in the 1980s, and also in teen pop and boy bands during the 1990s and early 2000s.
title: Jive Records
paragraph_text: Tom Browne (born October 30, 1954 in Queens, New York, United States) is an American jazz trumpeter, who rose to prominence first through his early work with Sonny Fortune, and scored two major hits in 1980 and 1981: the No. 1 US "Billboard" R&B single "Funkin' for Jamaica (N.Y.)" and the No. 4 US R&B single, "Thighs High (Grip Your Hips and Move)". Later in 1982 he released a minor hit called, "Fungi Mama (bebopafunkadiscolypso)" which was also recorded on the Arista record label. It reached number 58 in the UK chart.
title: Tom Browne (trumpeter)
paragraph_text: Gameface is the debut studio album by Filipino pop/R&B singer Jay R, released in the Philippines in August 2003 by Universal Records. He produced the album together with Ray Brown and Troy Johnson, in partnership with NuLife and his record label. To date, the album has reached Platinum status by the Philippine Association of the Record Industry (PARI), denoting over 30,000 units sold in the country.
title: Gameface
paragraph_text: Face of a Fighter is an album by country singer Willie Nelson. It was recorded in 1961 but released in 1978 when Nelson founded his own label company, Lone Star Records.
title: Face of a Fighter
paragraph_text: EmArcy Records is a jazz record label founded in 1954 by Mercury Records, and today a European jazz label owned by Universal Music Group. The name is a phonetic spelling of "MRC", the initials for Mercury Record Company.
title: EmArcy Records
paragraph_text: Santa Monica was long inhabited by the Tongva people. Santa Monica was called Kecheek in the Tongva language. The first non-indigenous group to set foot in the area was the party of explorer Gaspar de Portolà, who camped near the present day intersection of Barrington and Ohio Avenues on August 3, 1769. There are two different versions of the naming of the city. One says that it was named in honor of the feast day of Saint Monica (mother of Saint Augustine), but her feast day is actually May 4. Another version says that it was named by Juan Crespí on account of a pair of springs, the Kuruvungna Springs (Serra Springs), that were reminiscent of the tears that Saint Monica shed over her son's early impiety.
title: Santa Monica, California
paragraph_text: Nothing Records was an American record label specializing in industrial rock and electronic music, founded by John Malm Jr. and Trent Reznor in 1992. It is considered an example of a vanity label, where an artist is able to run a label with some degree of independence from within a larger parent company, in this case being Interscope Records.
title: Nothing Records
paragraph_text: Brown and Roach Incorporated is an album by American jazz trumpeter Clifford Brown and drummer Max Roach featuring tracks recorded in August 1954 and released on the EmArcy label.
title: Brown and Roach Incorporated
paragraph_text: RCA/Jive Label Group CEO Barry Weiss left the company in March 2011 to become the new CEO of Island Def Jam and Universal Republic, which were both part of Universal Music Group. Weiss had been the RCA/Jive Label Group CEO since 2008 and was head of Jive Records since 1991.
title: Sony Music
paragraph_text: "Papa's Got a Brand New Bag" is a song written and recorded by James Brown. Released as a two-part single in 1965, it was Brown's first song to reach the "Billboard" Hot 100 Top Ten, peaking at number eight, and was a number-one R&B hit, topping the charts for eight weeks. It won Brown his first Grammy Award, for Best Rhythm & Blues Recording.
title: Papa's Got a Brand New Bag
paragraph_text: Ace Fu Records is an independent record label founded in 1998 by Eric Speck. It is located in Williamsburg, Brooklyn. The label went on indefinite hiatus in 2007.
title: Ace Fu Records
paragraph_text: Robert "Bob" Shad (born Abraham Shadrinsky; February 12, 1920 – March 13, 1985) was an American record producer and record label owner. He produced the first album by Big Brother and the Holding Company (featuring Janis Joplin). Among his more successful labels were Time Records, Brent Records, and Mainstream Records.
title: Bob Shad
paragraph_text: Cargo Records is a record label based in London, England, which distributes musical recordings in the United Kingdom and Europe. The company currently distributes records in a wide variety of genres, both as a label in its own right and as a distributor for other independent record labels.
title: Cargo Records (UK)
paragraph_text: Blues for We is the third album by American blues guitarist Mel Brown (guitarist) recorded in 1969 for the Impulse! label.
title: Blues for We
paragraph_text: The Right Stuff Records is a reissue record label that was part of EMI, which is now owned by Universal Music Group and is based out of Santa Monica, California.
title: The Right Stuff Records
paragraph_text: Just Be Free is a demo album released by Warlock Records featuring music recorded by American singer Christina Aguilera. After finishing her run on "The New Mickey Mouse Club", a then fifteen-year-old Aguilera began recording the album with New Jersey-based producers Roberts Alleca and Michael Brown. The pair gave Aguilera the opportunity to use a recording studio and presented her with demo music with the understanding that they could use the material for their own purpose, but also claiming they would not commercially release the recordings. Musically, the album consisted of dance style tracks as well as ballads, and saw Aguilera performing in Spanish language songs. The record was conceived to showcase Aguilera's vocals in an effort to reach out to record labels, a venture which actually backfired after the recordings were not very well received among critics. Six years after the completion of the album and Aguilera had achieved mainstream success, Brown and Allecca released the record and "Just Be Free" has sold over 128,000 copies in the United States.
title: Just Be Free

Reasoning steps:
Study in Brown >> record label >>>> EmArcy Records
What company is EmArcy Records part of? >>>> Universal Music Group
Universal Music Group >> headquarters location >>>> Santa Monica
What date did the explorer reach Santa Monica ? >>>> August 3, 1769

Answer: spans: August 3, 1769