Synonyms for "day of worship" may vary depending on the religion or belief system involved. For example, in Christianity, the "day of worship" is commonly referred to as "Sunday," as it is the day on which many Christians gather to worship. In Judaism, the "day of worship" is celebrated on Shabbat or the Sabbath, which is from Friday evening to Saturday evening. In Islam, the "day of worship" is Friday, the day on which Muslims gather for communal prayers. Other synonyms for "day of worship" may include "holy day," "sacred day," or "day of rest," depending on the context and the specific religious tradition.