The NFL offseason is officially underway with the conclusion of Super Bowl LIII, and there's plenty to follow between now and the NFL Draft in late April.

Here are some key dates on the NFL calendar to keep in mind over the next several months.

Feb. 4 – Waiver system begins for 2019.

Feb. 19 – First date for clubs to designate Franchise or Transition Players.

Feb. 26 – March 4 – NFL Scouting Combine at Lucas Oil Stadium in Indianapolis, Indiana.

March 5 – Prior to 4:00 p.m. New York time, deadline for clubs to designate Franchise or Transition Players.

March 11-13 – Clubs are permitted to contact and enter into contract negotiations with the certified agents of players who will become Unrestricted Free Agents upon the expiration of their 2018 player contracts at 4:00 p.m. New York time on March 13.   

March 13 – Prior to 4:00 p.m. New York time, clubs must submit qualifying offers to their Restricted Free Agents with expiring contracts to retain a Right of First Refusal / Compensation.

March 13 – Prior to 4:00 p.m. New York time, clubs must submit a minimum salary tender to retain exclusive negotiating rights to their players with expiring 2018 contracts who have fewer than three accrued seasons of free agency credit.

March 13 – All clubs must be under the 2019 Salary Cap prior to 4:00 p.m. New York time.

March 13 – The 2019 League Year and Free Agency period begin at 4:00 p.m. New York time.

March 13 – Trading period for 2019 begins at 4:00 p.m. New York time.

March 24 – 27 – Annual League Meeting in Phoenix, Arizona.

April 1 – Clubs that hired a new head coach after the end of the 2018 regular season may begin offseason workout programs.

April 15 – Clubs with returning head coaches may begin offseason workout programs.

April 19 – Deadline for Restricted Free Agents to sign Offer Sheets.

April 25 – 27 – NFL Draft in Nashville, Tennessee.