Comparative dates on which the Nationals notched their 28th win, each season:
2017 - 24th May (45th match of season)
2016 - 24th May (46th match)
2018 - 26th May (50th match)
2012 - 26th May (46th match)
2015 - 27th May (47th match)
2013 - 31st May (55th match)
2005 - 2nd June (54th match)
2014 - 3rd June (56th match)
2010 - 8th June (59th match)
2006 - 8th June (61st match)
2011 - 10th June (64th match)
2007 - 13th June (65th match)
2008 - 14th June (70th match)
2009 - 22nd July (94th match)