(WIVB) — A number of events will be happening this week to mark the twentieth anniversary of the September 11, 2001 terrorist attacks.

Here is a list of them:

Friday, September 10

• Getzville – 9/11 memorial liturgy at St. Pius X Church – 7 p.m.
• Olean – Memorial service at St. Bonaventure University’s 9/11 Memorial near the Swan Business Center – 12:20 p.m.

Saturday, September 11

• Amherst – 20th anniversary commemoration event at Amherst Memorial Hill Grove along the Ellicott Creek Bike Path – 9 a.m.
• Buffalo
  • Ceremony at the Buffalo and Erie County Naval & Military Park – 8:30 a.m.
  • Bisons offering free tickets for first responders, active military members and veterans for Sept. 11 game – 6:05 p.m.
  • Flag tribute at Kleinhans Music Hall – 9 a.m.
  • Remembrance ceremony at the Scajaquada Expressway pedestrian bridge – 8:30 a.m.
  • Buffalo Philharmonic Orchestra honors America’s heroes in 20th anniversary September 11 tribute performance at Kleinhans Music Hall – 7:30 p.m.
• Cheektowaga – Tunnel to Towers 5K at Bellevue Fire Company – 10:30 a.m.
• Lewiston – 9/11 remembrance ceremony at the Niagara University flag pole between Alumni Chapel and Glynn Hall – 9 a.m.
• Niagara Falls – 9/11 tribute at Royale Avenue Fire Station – 9:58 a.m.
• Tonawanda – Remembrance ceremony at the Tonawanda Fire Department headquarters (44 William St.) – 9:45 a.m.