Credit to NBA.com for assembling the list below. I realize that there are varying degrees of "excitement" for the NBA among Sonics fans currently, so for those who still connect with the NBA these are some things to keep your eyes on.
2013
Sept. 27 -- 2013 NBA Team Media Days for teams competing in international preseason contests
Sept. 28 -- 2013 NBA Training Camps open for practice for teams competing in international preseason contests
Sept. 30 -- 2013 NBA Team Media Days
Oct. 1 -- 2013 NBA Training Camps open for practice
Oct. 5 -- NBA Global Games Istanbul 2013 (Oklahoma City Thunder @ Fenerbahce Ulker in Istanbul, Turkey at Ulker Sports Arena)
Oct. 6 -- NBA Global Games Bilbao 2013 (Philadelphia 76ers @ Bilbao Basket in Bilbao, Spain at Bizkaia Arena at the BEC)
Oct. 8 -- NBA Global Games 2013 Manchester (Oklahoma City Thunder vs. Philadelphia 76ers in Manchester, England at Phones 4u Arena)
Oct. 10 -- NBA Global Games 2013 Manila (Houston Rockets vs. Indiana Pacers in Manila, Philippines at Mall of Asia Arena)
Oct. 12 -- NBA Global Games 2013 Rio de Janeiro (Chicago Bulls vs. Washington Wizards in Rio de Janeiro, Brazil at HSBC Arena)
Oct. 13 -- NBA Global Games 2013 Taipei (Houston Rockets vs. Indiana Pacers in Taipei, Taiwan at Taipei Arena)
Oct. 15 -- NBA Global Games 2013 Beijing (Golden State Warriors vs. Los Angeles Lakers in Beijing, China at MasterCard Arena)
Oct. 18 -- NBA Global Games 2013 Shanghai (Golden State Warriors vs. Los Angeles Lakers in Shanghai, China at Mercedes-Benz Arena)
Oct. 28 -- Rosters set for Opening Day (5 p.m. ET)
Oct. 29 -- 2013-14 Season Tips Off
Dec. 4 -- NBA Global Games Mexico City 2013 (Minnesota Timberwolves vs. San Antonio Spurs at Mexico City Arena)
2014
Jan. 6 -- 10-day Contracts can now be signed
Jan. 10 -- All Contracts are guaranteed for remainder of the season
Jan. 16 -- NBA Global Games London 2014 (Atlanta Hawks vs. Brooklyn Nets at The 02)
Feb. 14-16 -- 2014 NBA All-Star (New Orleans, LA)
Feb. 20 -- 2014 NBA Trade Deadline (3 p.m. ET)
April TBD -- Portsmouth Invitational Tournament (Portsmouth, VA)
April 16 -- Last Day of 2013-14 Regular Season
April 19 -- 2014 NBA Playoffs begin
April 27 -- NBA Draft Early Entry Eligibility Deadline (11:59 p.m. ET)
May 5 -- Conference Semifinals begin (possible move-up to May 3 or 4)
May TBD -- 2014 NBA Draft Combine
May 20 -- Conference Finals begin (possibly move-up to May 18 or 19)
May 20 -- 2014 NBA Draft Lottery
June 5 -- The Finals begin
June 16 -- NBA Draft Early Entry Withdrawal Deadline (5 p.m. ET)
June 26 -- 2014 NBA Draft