ive seen multiple websites reporting its february 29th for the opening and free agency and trading. i know the NFL website says its march 3rd, but this is what ive seen for offseason dates.
*from my offseason transactions thread*
Feb. 7-21, teams may designate franchise and transition players;
Feb. 11, first day teams may cut players;
Feb. 20-26, scouting combine in Indianapolis;
Feb. 28 player contracts officially expire and teams must have reported to the league tenders for restricted free agents and exclusive-rights free agents;
[B]Feb. 29, free agency and trading begins; [/B]
March 17, first day teams may begin offseason conditioning;
March 30, NFL Annual Meeting;
April 18, deadline for RFA offer sheets;
April 26-27, NFL draft.
heres a website that backs this up: