Sundays are now associated with NFL Football. But there was a time when Sunday sports was a no-no in this country.
The Battle for Sunday Baseball
https://www.libertymagazine.org/article/the-battle-for-sunday-baseball
Sadly yes, but what would you expect from the secular World.
That being said, I am free to worship God any day of the week. I can do it on Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, or Saturday if I wish.
Thanks to Jesus, I am not forced to do it on any special day.
Heck, I spend 2 to 3 hours 7 day a week early in the morning before the world has a chance to get in my head so I can read the Bible and worship God.