The annual trade deadline, add and drop final dates, and roster freeze dates begin tomorrow February 6, 2015 at 11:59 Mountain time.
These are the official rules from the USA Hockey Annual guide;
(11) February 6 – Movement of U.S. Citizen Players Between USA Hockey
Member Teams
All movement of U.S. citizen players by trade between USA Hockey
member Tier I, Tier II, and Tier III teams must be completed on or before
11:59 p.m. Mountain time on February 6 of each season.
(12) February 6/8 – Drops of U.S. Citizen Players by USA Hockey
Member Teams
(a) All Tier I drops of U.S. citizen players must be completed by 11:59
p.m. Mountain time on February 6 of each season.
(b) All Tier II drops of U.S. citizen players must be completed on or
before 11:59 p.m. Mountain time on February 8 of each succeeding
season.
(13) February 10 – All Protected Lists Frozen for Balance of Season
All protected lists shall be frozen at 11:59 p.m. Mountain time on
February 10 of each season. The frozen protected list shall continue until
the team on whose protected list the player appears shall have completed
its final regular-season, playoff, regional or national championship game.