Members of the Church of Jesus Christ of Latter Day Saints (Mormons) celebrate the birth of Jesus Christ on Christmas and his Resurrection on Easter. Many members also celebrate "Pioneer Day" on the 24th of July, as that is the day when the first group of Mormon Pioneers arrived at what is now Salt Lake City. Some members observe April 6th as well, which is the day the Church was officially organized. Church members also regard each Sunday as the Sabbath and keep that day holy by spending time with family, worshipping Jesus Christ, studying scripture, and visiting the sick. They do not seek entertainment, go shopping, participate in sporting events, or work on Sunday.