What were/are the bloodiest days in American History, not counting Native Americans?

[Red Yahoo100]

Here's what I have:

1) Battle of Antietam

2) Pearl Harbor

3) D-Day/Normandy Landings

4) 9/11

5) Virginia Tech Massacre


Does that sound about right? Please add to it if you can!
Note: I meant only battles/events that lasted only a day, not like a 1 day of a battle.

 

[azo]

1) Battle of Antietam
2) Okinawa
3) Battle of the Bulge
4) Battle of Shiloh (civil war)
5) Battle of Iwo Jima

 

[Panama Joe]

Antietam was certainly one of the bloodiest days, as was the first Fredricksburg. Pearl Harbor? 2500 more or less.

April 1, 1945, the invasion of Okinawa had worse casualties than Normandy, at least for the first days of each battle.

 

[Canadian Bacon]

Why is Virginia Tech on the list? Only 32 people died there. If you're going for small, but high-impact numbers, the Oklahoma City Bombing claimed 168 lives.

 

[Louie O]

May 3, 1863 during the Battle of Chancellorsville, 2358 dead; 18,000 casualties total.