"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. As with all nursery rhymes, there are many versions. It has a Roud Folk Song Index number of 19526.

Common modern versions include:

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,

And the child that is born on the Sabbath day

Is bonny and blithe, and good and gay.

More Info: en.wikipedia.org