What is come saturday morning meaning?

"Come Saturday morning" is an idiomatic phrase used to refer to a specific time or day, specifically Saturday morning. It is often used in a casual and informal manner to suggest that something is scheduled to happen or will take place on that day. The phrase is commonly used to refer to social events, activities, or gatherings that are planned for Saturdays, such as brunch, weekend trips, or weekend classes, or simply to indicate a time to relax from the workweek and enjoy the weekend. It is also the title of a popular song written by Fred Karlin and Dory Previn and recorded by several artists, including The Sandpipers and Liza Minnelli.