No. Sunday (celebrating the Resurrection) as for the day of worship and the observation of the sacraments of Baptism and the Lord's Supper (Communion or Eucharist) including the several elements of worship such as prayer, singing of praise, reading and preaching the Word (the Scriptures or the Bible). Christians do not observe the Old Testament feasts such as the Day of Atonement (Yom Kippur) or Passover except as their implications are assimilated into the Lord's Supper for example. Jesus, who Christians believe to be the Second Person of the Godhead, instituted the Lord's Supper which was to be and is observed in these New Testament times with elements of Passover.

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