Really? I remember seeing it on an old calendar, but never "celebrated" it. Even the hard core UDC people I know don't celebrate it, but their stance is that "Confederate Memorial Day" started back after the War Between the States. It's pretty much a moot point, IMHO.

I've lived in Florida my whole life and now in Georgia and I've never heard of it.

I had never heard about it when I was in school (I graduated HS in 96). The first rumblings I heard were when it was going through legislation.

This is my first time even hearing about this holiday...

This one's for North Carolina! C'mon and raise up
Take your shirt off, twist it 'round yo' hand
Spin it like a helicopter
North Carolina! C'mon and raise up
This one's for you, uh-huh, this one's for who?
Us, us, us; yes sir!

As the Wikipedia Article on Confederal Memorial Day shows, different Southern states observe it (to whatever extent they observe it) on different dates.

According to this list at infoplease (no idea how accurate it is), state offices may be closed on Confederate Memorial Day (or that state's equivalent) in Alabama, Georgia, Mississippi, South Carolina and Texas.

Just to REALLY clarify, I've never heard of it being "celebrated", I just saw it on a few calendars.