The Collaborative International Dictionary
Monday's Child \Mon"day's Child\ (m[u^]n"d[=a]z ch[imac]ld`), n. A child who is fair of face; -- a reference to a nineteenth century poem. See below.
Monday's child is fair of face, Tuesday's child is full of grace, Wednesday's child is full of woe, Thursday's child has far to go, Friday's child is loving and giving, Saturday's child works hard for a living, But the child who is born on the Sabbath day, Is lucky and happy and good and gay.
Wikipedia
"Monday's Child" is one of many fortune-telling songs, popular as nursery rhymes for children. It is supposed to tell a child's character or future based on the day of birth and to help young children remember the seven days of the week. Of the seven days, all children those days represent have positive futures except for one – Wednesday. As with all nursery rhymes, there are many versions. It has a Roud Folk Song Index number of 19526.
Monday's Child is a 1967 Argentine drama film directed by Leopoldo Torre Nilsson, based on a story by André Du Rona. It was entered into the 1967 Cannes Film Festival.