As of 2015, the next time New Year's Eve will be on a Wednesday will be in 2025.
This year
2007
The last time 13 September fell on a Wednesday was in 2006.
The last time May 25th fell on Wednesday was in 2011 the next time will be in 2016. Throughout the 21st Century, May 25 fell/will fall on Wednesday in the years: 2005, 2011, 2016, 2022 2033, 2039, 2044, 2050 2061, 2067, 2072, 2078 2089 and 2095.
In 2002. It was on Tuesday in 2007, but because of the leap year in 2008, it skipped Wednesday and it was Thursday that year.
The last time Ash Wednesday fell on February 5 was in 1913 and it hasn't hit that day since and doesn't look like it will until sometime after 2078.
New Years fell on a Sunday on the night before the year of 2012.
the last time was 2017
the last time was 2017
As of 2014, the last time the 4th of July was on a Wednesday was in 2012.
As of 2014, it was last on a Wednesday in 2012 and will be on it again in 2018.
Feb 29th falls on Wednesday every 28 years, except when the 28 year interval has only 6 leap years rather than 7. (There are no leap years on years divisible by 100, unless they're also divisible by 400. Thus no leap year in 1900, but leap year in 2000.) Leap years that fell on Wednesday: 2012 1984 1956 1928 1888 1860 1832 1804 1792 1764
The most recent two years before 2020 in which 11 Mar was a Wednesday are 2009 and 2015.