In 2023, Christmas remains a holy day of obligation for the Catholic Church. The Catholic Church requires all Catholics to attend mass and engage in spiritual activities on Christmas Day, as it is considered a day of great reverence and celebration of the birth of Jesus Christ. However, it's worth noting that the observance of Christmas as a holy day of obligation may vary depending on the specific denomination or country. For example, in some countries or regions, Christmas may not be officially recognized as a holiday or may have different religious significance.