Thomas Sunday is the first Sunday after Easter. It is also called the Sunday of Antipascha, White Sunday. It is called New Sunday, because the beginning of all weeks begins with it, because after Easter it repeats for the first time and as if renews the great feast of the Resurrection. It is dedicated to the Holy Apostle Thomas, and his disbelief in the Resurrection of Christ.
On that day, the Apostle Thomas replaced his disbelief with faith. The doubts of the Apostle Thomas were removed by the Lord Himself, entering through the closed door into the room where the apostles were gathered for prayer, telling Thomas to feel His wounds. After that, the Apostle Thomas exclaimed: “My Lord and my God!”

In the service of Thomas Sunday, in addition to the main theme of the apostle Thomas’s conviction of the Resurrection of Christ, the glorious descent of Jesus Christ into Hades (the Magnificat) is also mentioned, where He announced to the dead His victory over sin and death and His eternal glorification (1 Pet 3:18-19). The order of the service on that day, as well as its content, is not ordinary, resurrected. This is as if it were the order of one of the twelve feasts, only without the parimeia, but with a litany, with the singing of special stichera that describe the event being celebrated.

From Thomas Sunday, prayers for the dead are again performed, after a break within the period that began with the Sabbath of Lazarus. The forty-day parastos are exempt from this period of prohibition, in accordance with the regulations of the Typikon. On the day after Thomas Sunday, on Shrove Monday, memorial services are held at cemeteries, whereby the living congratulate their deceased relatives and friends on the joyful holiday of the Resurrection of Christ. At memorial services and funerals at the cemetery until the Easter service, instead of “Holy God,” “Christ is Risen” is sung.

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