St. Nicholas the Wonderworker, Archbishop of Myra in Lycia. December 19th (December 6th old style) St. Nicholas the Wonderworker, Archbishop of Myra in Lycia. December 19th (December 6th old style) December 14, 2025 Dmitry Kilin Thursday of 28th Week after Pentecost. St. Nicholas the Wonderworker, Archbishop of Myra in Lycia. Thursday, December 19th, (December 6th according to old style)