The following comes from an August 19 press release from the Los  Angeles archdiocese,

On Saturday, September 14th the Los Angeles Archdiocese will celebrate the city’s 232nd birthday with a procession, Mass, and feast in honor of the Blessed Virgin Mary, Queen of Angels, for whom the city is named: “El Pueblo de Nuestra Señora de Los Ángeles”. The event, now in its third consecutive year, will bring together L.A.’s multicultural communities and is made possible by The Queen of Angels Foundation and the Cathedral of Our Lady of the Angels.
Archbishop José Gomez calls on all Catholics to honor the patroness of Los Angeles, saying: “this beautiful celebration reminds us that our modern, secularized city – which plays such a big role in shaping opinions, fashions and culture – is dedicated to the angels and the Mother of Jesus, who is the Queen of all the Angels in heaven.  We can never forget that Los Angeles – and all of California and the Americas – are built on a Christian foundation.”

Banners, flags, color guards and bagpipers will highlight the processional parade which starts at Our Lady Queen of Angels “La Placita” and ends at the Cathedral of Our Lady of the Angels with a rosary and votive Mass led by Archbishop Gomez. The event organizer and chairman of the Queen of Angels Foundation, Mark Anchor Albert, stated: “this procession honors the Blessed Mother and revives the Los Angeles tradition which started with its founding in 1781 at La Placita, downtown’s oldest continuously operating Roman Catholic church.”
The 2013 procession brings together 55 different Southland cultural communities, along with their representatives and leaders such as: Consulate General Sylvia Fernández (Costa Rica), Consulate General Dr. Bern Fischer (Germany), Consulate General Szilerd Teleki (Hungary), Consulate General Johnny Ibrahim (Lebanon), Consulate General Victor Peña (Paraguay), Consulate General Maria De La Vega (Philippines), Consulate General Daniel Orszag (Slovak Republic), and Consulate General Enrique Molero (Spain), among others.
The public is invited to join the 2013 Grand Marian Procession on Saturday, September 14th, 2013 starting with blessings and invocations at 3:00pm, at Mission Nuestra Señora Reina de Los Angeles “La Placita.”
There is no charge for admission. Paid and street parking is available and seating is on a first come, first served basis. For more information, or to make a contribution, visit: https://www.thequeenofangels.com/
Event Timetable:
2:30 PM – Grand Marian Procession forms at La Placita, 535 N. Main Street, LA
3:00 PM – Blessings & Invocation
4:00 PM – Grand Marian Procession through Downtown L.A.
5:00 PM – Grand Marian Procession arrives at the Cathedral Plaza
5:15 PM – Holy Rosary inside the Cathedral (English & Spanish)
5:30 PM – Votive Mass in Our Lady of the Angels Cathedral
6:45 PM – Fiesta in Cathedral Plaza
About the Queen of Angels Foundation
The Queen of Angels Foundation is a 501(c)(3) tax exempt, nonprofit religious corporation dedicated to fostering devotion to Our Lady of the Angels as the patroness and protector of the City, County and Archdiocese which bear her name.  The City of Los Angeles was founded on September 4, 1781 in honor of the Blessed Virgin, Queen of Angels (El Pueblo de Nuestra Señora la Reina de Los Angeles).
Event Contact Information:
Media: Ana Matonte
Phone: (323) 785-5507 (main); (818) 207-8671 (cell)
Procession Contact: Mark Anchor Albert, Chairman
Phone: (213) 687-2645 (main)
The Queen of Angels Foundation