March 9-11: Clubs are permitted to enter into contract negotiations with certified agents of players who will be Unrestricted Free Agents at the end of the current League Year.

March 12 : Prior to 4:00 p.m., New York time, clubs must exercise options for 2013 on all players who have option clauses in their 2012 contracts.

March 12: Prior to 4:00 p.m., New York time, clubs must submit Qualifying Offers to their Restricted Free Agents with expiring contracts and to whom they desire to retain a Right of First Refusal/Compensation.

March 12 : Prior to 4:00 p.m., New York time, clubs must submit a minimum salary offer to retain exclusive negotiating rights to their players with expiring 2012 contracts and who have fewer than three seasons of free agency credit.

March 12 : All 2012 player contracts will expire at 4:00 p.m., New York time.

March 12 : Top-51 Begins. All clubs must be under the Salary Cap prior to 4:00 p.m., New York time.

March 12 : The 2013 League Year and Free Agency period begin at 4:00 p.m., New York time.

March 12: Trading period begins at 4:00 p.m., New York time, for 2013 after expiration of all 2012 contracts.

March 16-17: Regional Combine, Atlanta Falcons Training Facility, Atlanta, Georgia

March 17-20: Annual League Meeting, The Biltmore, Phoenix, Arizona.

March 23-24: Regional Combine, Virginia Mason Athletic Center (Seahawks), Seattle, Washington

March 23-24: Regional Combine, Baltimore Ravens Training Facility, Baltimore, Maryland

April 7-8: Super Regional Combine, Cowboys Stadium, Dallas, Texas

April 25-27: NFL Draft, New York City, New York.

May 20-22: NFL Spring League Meeting, Hyatt-Harborside, Boston, Massachusetts.

September 5, 8-9: NFL Kickoff 2013