Boxing Day

I wasn't sure where to ask this but, since it's not particularly serious, thought to ask it here:
Why does Australia, Canada and New Zealand have Boxing Day after Christmas? Don't they keep any of their gifts -- and shouldn't it be called "Re"-Boxing Day?

Why does Australia, Canada and New Zealand have Boxing Day after Christmas? Don't they keep any of their gifts -- and shouldn't it be called "Re"-Boxing Day?


