Sunday father

I know today is not Sunday, but when I saw this father and daughter in the park this morning, I couldn't help but remember Sting's song.:  I'm so happy that I can't stop crying
Here is part of the lyrics of this beautiful and sad song:

"The park is full of Sunday fathers and melted ice cream
We try to do the best within the given time
A kid should be with his mother
Everybody knows that
What can a father do but baby-sit sometimes?
I saw that friend of mine, he said
"You look different somehow"
I said, "Everybody's got to leave the darkness sometime"
I'm so happy that I can't stop crying
I'm laughing through my tears ..."