Sat·ur·day /ˈsætɚˌdeɪ/ noun plural Sat·ur·days
: the day of the week between Friday and Sunday [count] ▪ They left last Saturday. ▪ He will arrive next/this Saturday. ▪ His birthday falls on a Saturday this year. ▪ (Brit) He will arrive on the Saturday and leave on the Wednesday. ▪ The club meets on Saturdays. = The club meets every Saturday. [noncount] ▪ I will arrive on Saturday. = (chiefly US) I will arrive Saturday. — abbr. Sat.
— Sat·ur·days /ˈsætɚˌdeɪz/ adverb
▪ He visits his parents Saturdays. [=he visits his parents every Saturday]