August 5th – All teams must submit their 30-man protected list and affiliate list
September 1st - USHL Training Camps Open. First day IR can be utilized
September 20th - Teams must make necessary drops by 12PM CT to get to their 25-man protected list
September 21st - Roster adds by 12PM CT (excluding trades) do not count towards roster moves limit
September 23rd-26th - Regular Season begins at the 2021 USHL Fall Classic in Pittsburgh, PA
October 12th – Team carrying five (5) 2000-born players must drop one by 6PM CT
December 3rd-5th - American Cup in Rochester, NY
December 31st – Last day to add free agent non-affiliate players playing high school or midget hockey
January 10th – Final day for Hockey Canada teams to release a player from the roster
January 28th-30th - Frosty Cup in Dallas, TX
January 31st – Final day for IIHF to process a transfer
February 6th – USA Hockey Trade and Drop Deadline. Final day to drop or trade an import.
February 10th – Final day to add player from affiliate list to roster
February 15th – Four (4) affiliate players may begin to play an unlimited number of games
February 28th – USHL Trade Deadline (6:00PM Central)
March 1st – No affiliate list players are eligible to play until their season has been completed
April 23rd – End of Regular Season
May 2nd – USHL Phase I Draft
May 3rd – USHL Phase II Draft
May 25th – Last possible game for Clark Cup Final