When a noun (Saturday) is used as an adjective to describe another noun it's called a noun adjunct (or attributive noun).
Examples:
There is a lot of anticipation for the Saturday game.
We have a larger than usual turnout for our Saturday service.
Saturday afternoon is our busiest time of the week.
It was Saturday and I was relaxing on the couch
After Saturday --"Dad, is Opening Day on Saturday, April 2?"--
My dad telemetry the house length Saturday
The shops tend to be busier on a Saturday than during the week.
The nouns in the sentence are: Saturday and February.
The church vestibule is still being used on Saturday mornings for the sale of books.
Yes, Saturday should be capitalized.
it can be used in a sentence like ................................
The match was scheduled for saturday, but bad weather forced the officials to postpone the game for a week.
John's mother buys all the necessary fruit and vegetables from the market on Saturday.
you can use it in many scentences here is an example: I went to the beach on Saturday to sunbathe. Or for a more simpiler one: I like to sunbathe.
We walked hand-in-hand on the promenade. We liked to promenade in the town square every Saturday evening.