Children have off on Sundays and sometimes on Saturdays as well.

[tufguy]

The XYZ (company) doesn't provide you day off on the occasion of festivals.

Children have off on Sundays and sometimes on Saturdays as well.

Tom's son is at home today because his son didn't have to go to school today. The school is closed today so it is his off today.

Please check my sentences.

[emsr2d2]

The XYZ (company) doesn't provide give you a/the day off on the occasion of for festivals.

Children have Sundays and some Saturdays off. on Sundays and sometimes on Saturdays as well.

Tom's son is at home today because his son he didn't have to go to school. today. The school is closed today so it is his he has the day off. today.

Please check my sentences.

There was too much repetition in your sentences, especially in the third.

[teechar]

I would put a comma before "so" in the last one.

[tufguy]

There was too much repetition in your sentences, especially in the third.

So do we say children also have their day off or two days off from school?

Tim didn't go to school because he has a day off today. Tim will have two days off at the weekend.

[Rover_KE]

Tim didn't go to school because he has a day off today. Tim will have two days off at the weekend.

Those are correct.