Mennonites believe that God called for a day of rest, a day to reflect and worship. We set aside that day as a time of meeting together in worship and teaching from the Bible, and often we gather with our families and/or church families to spend time together. We have worship services, sometimes “fellowship” meals together, and often the young people or children have special activities planned. Following the tradition of the early church, Mennonites celebrate a Sunday Sabbath. We base this on our understanding that Jesus rose from the dead on the first day of the week.
To learn more about the reasons the early church moved from a Saturday to a Sunday Sabbath, you can read the following article by ReligiousTolerance.org. Please note that we do not have any affiliation with this website, but offer it only as a reference tool.