Original sentence: She is the only saint to be celebrated in Lutheran Sweden (as well as those parts of Norway and Finland where Swedish influence has historically been prominent).The celebration always takes place on December 13 and retains many pre-Christian traditions.The non-Christian holidays ar: New Year's Day, May Day (Valborg), National Day and Midsummer.The same is also true for many holidays in Sweden
Edited sentence: Although it is not an official holiday, it is probably the second most notable holiday in the country, after Christmas.National Day of Sweden.She is the only saint to be celebrated in Lutheran Sweden and parts of Norway and Finland, where historically Swedish influence has been prominent.The celebration always takes place on December 13 and retains many pre-Christian traditions, as do many holidays in Sweden.The non-Christian holidays are New Year's Day, May Day or Valborg, National Day and Midsummer