Ну и денек выдался в минувшую субботу!
I'm assuming it literally means "my/our little day stood out from others. It was special somehow", but its precise meaning eludes me.
It's been an eventful day. [in a positive sense]
or: It's been a rough day. [with a negative connotation of struggling]
or: It's been a long day. [feeling as if several days have passed in a single day]
On a side note: Is it just as acceptable to say "день выдался"?