Historically, what were the starting times for each of the Super Bowls?

I was mostly able to answer my own question through an amazing site called Pro Football Reference (specifically Team Game Finder Query Results). I found the data for all of the Super Bowls, except for the first four.

EDIT: Since this answer was getting some views I located the start times for the first four Super Bowls by searching Google images for the ticket stubs. I doubt that the actual kickoff was at the exact time, but that’s what’s printed on the tickets. I also added the kickoff times for the most recent Super Bowls.

Super Bowl I (1967–01–15): 4:00 PM EST (1:00 PM Local Time)
Super Bowl II (1968–01–14): 3:00 PM EST
Super Bowl III (1969–01–12): 3:00 PM EST
Super Bowl IV (1970–01–11): 3:30 PM EST (2:30 PM Local Time)
Super Bowl V (1971-01-17): 1:50 PM EST
Super Bowl VI (1972-01-16): 2:50 PM EST (1:50 PM Local Time)
Super Bowl VII (1973-01-14): 3:50 PM EST (12:50 PM Local Time)
Super Bowl VIII (1974-01-13): 3:50 PM EST (2:50 PM Local Time)
Super Bowl IX (1975-01-12): 3:00 PM EST (2:00 PM Local Time)
Super Bowl X(1976-01-18): 2:00 PM EST
Super Bowl XI (1977-01-09): 3:50 PM EST (12:50 PM Local Time)
Super Bowl XII (1978-01-15): 6:00 PM EST (5:00 PM Local Time)
Super Bowl XIII (1979-01-21): 4:00 PM EST
Super Bowl XIV (1980-01-20): 6:00 PM EST (3:00 PM Local Time)
Super Bowl XV (1981-01-25): 6:00 PM EST (5:00 PM Local Time)
Super Bowl XVI (1982-01-24): 4:00 PM EST
Super Bowl XVII (1983-01-30): 6:00 PM EST (3:00 PM Local Time)
Super Bowl XVIII (1984-01-22): 4:50 PM EST
Super Bowl XIX (1985-01-20): 6:00 PM EST (3:00 PM Local Time)
Super Bowl XX (1986-01-26): 5:00 PM EST (4:00 PM Local Time)
Super Bowl XXI (1987-01-25): 4:00 PM EST (1:00 PM Local Time)
Super Bowl XXII (1988-01-31): 6:00 PM EST (3:00 PM Local Time)
Super Bowl XXIII (1989-01-22): 5:00 PM EST
Super Bowl XXXIV (1990-01-28): 5:00 PM EST (4:00 PM Local Time)
Super Bowl XXV (1991-01-27): 5:30 PM EST
Super Bowl XXVI (1992-01-26): 6:30 PM EST (5:30 PM Local Time)
Super Bowl XXVII (1993-01-31): 6:30 PM EST (3:30 PM Local Time)
Super Bowl XXVIII (1994-01-30): 6:00 PM EST
Super Bowl XXIX (1995-01-29): 6:00 PM EST
Super Bowl XXX (1996-01-28): 6:33 PM EST (4:33 PM Local Time)
Super Bowl XXXI (1997-01-26): 6:30 PM EST (5:30 PM Local Time)
Super Bowl XXXII (1998-01-25): 6:30 PM EST (3:30 PM Local Time)
Super Bowl XXXIII (1999-01-31): 6:30 PM EST
Super Bowl XXXIV (2000-01-30): 6:25 PM EST
Super Bowl XXXV (2001-01-28): 6:28 PM EST
Super Bowl XXXVI (2002-02-03): 6:40 PM EST (5:40 PM Local Time)
Super Bowl XXXVII (2003-01-26): 6:26 PM EST (3:26 PM Local Time)
Super Bowl XXXVIII (2004-02-01): 6:25 PM EST (5:25 PM Local Time)
Super Bowl XXXIX (2005-02-06): 6:38 PM EST
Super Bowl XL (2006-02-05): 6:27 PM EST
Super Bowl XLI (2007-02-04): 6:27 PM EST
Super Bowl XLII (2008-02-03): 6:30 PM EST (4:30 PM Local Time)
Super Bowl XLIII (2009-02-01): 6:31 PM EST
Super Bowl XLIV (2010-02-07): 6:31 PM EST
Super Bowl XLV (2011-02-06): 6:34 PM EST (5:34 PM Local Time)
Super Bowl XLVI (2012-02-05): 6:30 PM EST
Super Bowl XLVII (2013-02-03): 6:31 PM EST (5:31 PM Local Time)
Super Bowl XLVIII (2014-02-02): 6:32 PM EST
Super Bowl XLVIX (2015–02–01): 6:30 PM EST (4:30 PM Local Time)
Super Bowl L (2016–02–07): 6:39 PM EST (3:39 PM Local Time)
Super Bowl LI (2017–02–05): 6:30 PM EST (5:30 PM Local Time)
Super Bowl LII (2018–02–04): 6:30 PM EST (4:30 PM Local Time)
Super Bowl LIII (2019–02–03): 6:30 PM EST
Super Bowl LIV (2020–02–02): 6:30 PM EST [Estimated]

Superbowl is the biggest event in American sports culture.

Usually the game starts around 1:30 PM and I have retracted the previous Superbowl last 43 years ago, and from what I have observed the Superbowl kickoff usually begins at 6:30 p.m. EST.

Here is the list of kickoff time for the last 43 years up until the recent Superbowls with corresponding teams who played the game:

• January 9, 1976 / 3:50 PM / Oakland Raiders vs Minnesota Vikings
• January 15, 1977 / 6:00 PM / Dallas Cowboys vs Denver Broncos
• January 21, 1978 / 4:00 PM / Pittsburgh Steelers vs Dallas Cowboys
• January 20, 1979 / 6:00 PM / Pittsburgh Steelers vs Los Angeles Rams
• January 25, 1980 / 6:00 PM / Oakland Raiders vs Philadelphia Eagles
• January 24, 1981 / 4:00 PM / San Francisco 49ers vs Cincinnati Bengals
• January 30, 1982 / 6:00 PM / Washington Redskins vs Miami Dolphins
• January 22, 1983 / 4:50 PM / Los Angeles Raiders vs Washington Redskins
• January 20, 1984 / 6:00 PM / San Francisco 49ers vs Miami Dolphins
• January 26, 1985 / 5:00 pm / Chicago Bears vs New England Patriots
• January 25, 1986 / 4:00 PM / New York Giants vs Denver Broncos
• January 31, 1987 / 6:00 PM / Washington Redskins vs Denver Broncos
• January 22, 1988 / 5:00 PM / San Francisco 49ers vs Cincinnati Bengals
• January 28, 1989 / 5:00 PM / San Francisco 49ers vs Denver Broncos
• January 27, 1990 / 5:30 PM / New York Giants vs Buffalo Bills
• January 26, 1991 / 6:30 PM / Washington Redskins vs Buffalo Bills
• January 31, 1992 / 6:30 PM / Dallas Cowboys vs Buffalo Bills
• January 30, 1993 / 6:00 PM / Dallas Cowboys vs Buffalo Bills
• January 29, 1994 / 6:00 PM / San Francisco 49ers vs San Diego Chargers
• January 28, 1995 / 6:33 PM / Dallas Cowboys vs Pittsburgh Steelers
• January 26, 1996 / 6:30 PM / Green Bay Packers vs New England Patriots
• January 25, 1997 / 6:30 PM / Denver Broncos vs Green Bay Packers
• January 31, 1998 / 6:30 PM / Denver Broncos vs Atlanta Falcons
• January 30, 1999 / 6:25 PM / St. Louis Rams vs Tennessee Titans
• January 28, 2000 / 6:28 PM / Baltimore Ravens vs New York Giants
• February 3, 2001 / 6:40 PM / New England Patriots vs St. Louis Rams
• January 26, 2002 / 6:26 PM / Tampa Bay Buccaneers vs Oakland Raiders
• February 1, 2003 / 6:25 PM / New England Patriots vs Carolina Panthers
• February 6, 2004 / 6:38 PM / New England Patriots vs Philadelphia Eagles
• February 5, 2005 / 6:27 PM / Pittsburgh Steelers vs Seattle Seahawks
• February 4, 2006 / 6:27 PM / Indianapolis Colts vs Chicago Bears
• February 3, 2007 / 6:30 PM / New York Giants vs New England Patriots
• February 1, 2008 / 6:31 PM / Pittsburgh Steelers vs Arizona Cardinals
• February 7, 2009 / 6:31 PM / New Orleans Saints vs Indianapolis Colts
• February 6, 2010 / 6:34 PM / Green Bay Packers vs Pittsburgh Steelers
• February 5, 2011 / 6:30 PM / New York Giants vs New England Patriots
• February 3, 2012 / 6:31 PM / Baltimore Ravens vs San Francisco 49ers
• February 2, 2013 / 6:32 PM / Seattle Seahawks vs Denver Broncos
• February 1, 2014 / 6:30 PM / New England Patriots / Seattle Seahawks
• February 7, 2015 / 6:39 PM / Denver Broncos vs Carolina Panthers
• February 5, 2016 / 6:40 PM / New England Patriots vs Atlanta Falcons
• February 4, 2017 / 6:30 PM / Philadelphia Eagles vs New England Patriots
• February 3, 2018 / 6:30 PM / New England Patriots vs Los Angeles Rams
• February 2, 2019 / 6:30 PM / Kansas City Chiefs vs San Francisco 49ers