ON the weekend or AT the weekend

Ahhh, the weekend. Saturday and Sunday – no work, all play.
Did you know, that the concept of a weekend is fairly recent? As part of the Industrial Revolution, workers often labored (very hard physical work) six or even seven days a week. The change came through 20th-century labor unions. Their activism eventually standardized the five-day workweek.
In Germany the 5-day work week came into effect for alternating weeks in 1966. One Saturday in two was now work free. The Council of Ministers’ decision of May 3, 1967, finally established the 5-day work week in the summer of 1967.
And the difference between AT the weekend or ON the weekend? AT the weekend is British English, in Canada and the USA people use ON the weekend.
Have an awesome weekend!!