I've been doing a little historical research and have come across four dates when the NYSE appears to have been closed and I can't figure out why: 1994-04-27 2004-06-11 2007-01-02 (not New Year's) 2018-12-05 Does anyone know why? These are not known market holidays.
That's funny.... I also tried typing the dates in google but did NOT get funerals of US presidents in the top 10 hits. Perhaps it's because I'm located in Canada and search results are modified to try to provide the information that is most relevant?? (Doesn't matter; off topic.)
Okay, I have them all now. Thanks for your help, qwerty11! In case it is of interest to anyone else, here are the dates the NYSE was closed between Jan 1, 1990 and today, for reasons other than planned holidays: 1994-04-27 Day of Mourning / Funeral (President Nixon) 2001-09-11 911 Terrorism 2001-09-12 911 Terrorism 2001-09-13 911 Terrorism 2001-09-14 911 Terrorism 2004-06-11 Day of Mourning (President Reagan) 2007-01-02 Day of Mourning (President Ford) 2012-10-29 Hurricane Sandy 2012-10-30 Hurricane Sandy 2018-12-05 Day of Mourning (President Bush)
If you use Python, the package exchange-calendars is useful: https://github.com/gerrymanoim/exchange_calendars (or even if you don't use Python, you can easily view the source and see various historical holidays mentioned)
Again, just in case it is of interest to others, here is a list of all irregular exchange closures back at least to 1954, according to Norgate: https://norgatedata.com/data-content-tables.php#futures NYSE - Irregular Exchange Closures Day Date Reason Fri Dec 24, 1954 Christmas Eve Mon Dec 24, 1956 Christmas Eve Fri Dec 26, 1958 Day after Christmas Mon May 29, 1961 Day before Decoration Day Mon Nov 25, 1963 Funeral of President John F. Kennedy Fri Dec 24, 1965 Christmas Eve Mon Feb 12, 1968 Lincoln's Birthday Tue Apr 9, 1968 National Day of Mourning for Martin Luther King, Jr. Various Jun 12-Dec 31, 1968 4-day week - "Paperwork Crisis" Mon Feb 10, 1969 Heavy snow Mon Mar 31, 1969 Funeral of former President Dwight D. Eisenhower Mon July 21, 1969 National Day of Participation for the lunar exploration Thu Dec 28, 1972 Funeral of former President Harry S. Truman Thu Jan 25, 1973 Funeral of former President Lyndon B. Johnson Thu Jul 14, 1977 Blackout in New York City Fri Sep 27, 1985 Hurricane Gloria Wed Apr 27, 1994 Funeral of former President Richard M. Nixon Tue-Fri Sep 11-14, 2001 Terrorist attack on World Trade Center Fri Jun 11, 2004 National Day of Mourning for former President Ronald W. Reagan Tue Jan 2, 2007 National Day of Mourning for former President Gerald R. Ford Mon-Tue Oct 29-30, 2012 Hurricane Sandy Wed Dec 5, 2018 Funeral of former President George H.W. Bush
Hmmm I thought in the earlier days the NYSE was quite often closed because of snow (related). However I only see one on your list (for the last 70 year)... Can be of course...
There are some days where the exchange opened late/closed early due to snow (since 1900): Feb 7 1967, Feb 11 1969, Feb 12 1975, Jan 20 1978, Feb 6 1978, Feb 7 1978, Feb 11 1994, Jan 8 1996. The previous list was for a complete closure (i.e. it was scheduled to open, but never did).