Somber memorials are being held throughout the region today, while other events will mark the occasion with uplifting music or a discussion on war and peace.
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Santa Clara Valley Transportation Authority buses and light-rail trains stopped and paused at 5:46 a.m., the time the first plane struck the north tower of the World Trade Center in New York City that day. The agency will also be highlighting safety aboard buses and trains throughout the day, encouraging the U.S. Department of Homeland Security's "If You See Something, Say Something" campaign, VTA officials said.
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San Francisco firefighters marked the occasion with a ceremony at 6:59 a.m., the time the south tower collapsed, ringing a bell and holding a moment of silence as the flag was lowered to half-staff, followed by a reading the names of each of the 343 firefighters killed.
Firefighters all over the Bay Area held similar ceremonies this morning.
VIDEO: San Francisco firefighters honor victims of Sept. 11 attacks
Union City's ceremony was scheduled at 10 a.m. to remember passengers on board United Airlines Flight 93, the fourth hijacked plane that did not hit its intended target, crashing instead in western Pennsylvania when the passengers tried to overcome the hijackers.
That flight was headed from Newark, New Jersey, to San Francisco International Airport when it crashed. The ceremony was held at the Union City memorial to the 33 passengers on board, created by a Hayward former marine and dedicated in December 2007.
The Livermore-Pleasanton Fire Department also planned a memorial at about the same time at Fire Station Number One at 3560 Nevada St.
As part of the day of service encouraged for today, volunteers will be working on the community garden at Redwood High School in Redwood City throughout the day, according to the group Rebuilding Together
The work will include building a potting bench, adding rainproof cupboards and painting a small mural in the front of the garden.
This afternoon and evening, several events are planned around the East Bay.
In Concord, the Lafayette Studio Big Band -- a 17-member Count Basie-style jazz orchestra -- will perform with guest vocalist Petty Officer 1st Class Steven Powell in Todos Santos Plaza starting at 4 p.m.
A Peace Picnic will be held at the James P. McEntee County Plaza at 70 W. Hedding St. in San Jose, starting at 5:30 p.m. with a Mexican vegetarian dinner accompanied by a classical guitar performance by Jaime Ponce.
Santa Clara County Supervisor Dave Cortese is expected to attend the event, which will feature interfaith prayer services, a ceremonial dove release and a Muslim sunset prayer.
A candlelight vigil will also be held tonight in Hayward outside of City Hall starting at 8 p.m.
Relatives recited the names of the nearly 3,000 people who died, as well as the 1993 Trade Center bombing victims' names, at the site of the World Trade Center. And around the world, thousands of volunteers will pledged to do good deeds, honoring an anniversary that was designated a National Day of Service and Remembrance in 2009.
LOCAL BAY AREA 9/11 EVENTS
September 11th Remembrance Ceremony held by the San Francisco Fire Department takes place at all 43 Fire Stations. Event begins at 6:45 a.m.
9/11 Candlelight Vigil begins 8:00 p.m. at Hayward 9/11 Memorial. 22738 Mission Boulevard - Hayward, California 94541.
9/11 event at Flight 93 Memorial site begins 10:00 a.m. at Sugar Mill Landing Park (corner of Alvarado-Niles and Dyer Streets).
The Lafayette Flag Brigade's 13th Annual 9/11 Remembrance and Candlelight Vigil begins at 4p.m. El Curtola Bridge, Hwy 24 overcrossing @ 680 Freeway, Lafayette
Fire Department Hosts 9/11 Remembrance Ceremony at Fire Station Number One, 3560 Nevada Street in Pleasanton. Event begins at 9:45 a.m.
Memorial service to honor those lives lost takes place at the Oak Hill Funeral Home and Memorial Park at 6p.m. 300 Curtner Ave, San Jose, CA 95125.