TV series example of the word

The Big Bang Theory Season 2, Episode 4
Okay. So Saturday night, can I count on my posse?

The Big Bang Theory Season 7, Episode 11
Saturday night is laundry night,

Breaking Bad Season 5, Episode 13
Mom, it's Saturday.

Breaking Bad Season 2, Episode 3
Since Saturday night? Partying for three days straight, huh?

The Big Bang Theory Season 7, Episode 19
and I'm seeing her Saturday...