With the exception of the absolute debut in 2005 and the Nats Park opener (ESPN Sunday Night Baseball) in 2008, every Nats home opener has started in the afternoon:
2005 - Thursday 14th April vs Diamondbacks - 19.05
2006 - Tuesday 11th April vs Mets - 13.05
2007 - Monday 2nd April vs Marlins - 13.05
2008 - Sunday 30th March vs Braves - 20.05
2009 - Monday 13th April vs Phillies - 15.05
2010 - Monday 5th April vs Phillies - 13.05
2011 - Thursday 31st March vs Braves - 13.05
2012 - Thursday 12th April vs Reds - 13.05
...and you bloody well bet I'll be there for the ninth home opener whatever the weather - if it's going to be cold I'll just break out my old Expos sweatshirt. (Thing is though, what are they going to run out of this time along about the fourth inning...hot dog buns? straws? beer cups? bottled water? patience?)
UH, 20.05 is 8:05pm last time I checked! I think it's considered a night game!
And yeah you have to shiver and shake and wait for a Zimmerman Walk Off!