A new school calendar published by the European Union has left out Christian holidays, including Christmas and Easter. But important Jewish and Muslim celebrations are still included.

Three million copies of calendar will be given away free of charge to students within the EU who request it.

The Catholic News Agency reported that former French politician and government minister Christine Boutin noted the omission of Christian holidays in a Jan. 11 blog post, saying the calendar slights "the religion practiced or recognized as forming the cultural assembly of our 'old' continent."

She wrote that Christianity has "fallen into the limbo of collective ignorance."

The European Union has called the omission of Christian holidays on a calendar distributed to millions of students an error. EU officials said the Christian holidays will be put back on the calendar for future printings.