Just Another Christmas (2020) on Netflix

Plot summary

In 2010, Christmas Eve finds Jorge at home with his wife Laura and the family, a man whose birthday falls on Christmas and who would rather not celebrate it. He speaks rudely about Laura's grandfather, Vô Nhanhão, who has not spoken in years, and Nhanhão tells him that he will come to understand the meaning of Christmas. That night Laura sends Jorge up onto the roof dressed as Santa; he falls and is knocked out. He comes to on Christmas Eve in 2011, confused, in a new car, promoted at work, with a smoking habit, and no recollection of the year in between.