 20,000 Martyrs of Nicomedia

The 20,000 Martyrs of Nicomedia refers to victims of persecution of Christians in Nicomedia, Bithynia (modern Izmit, Turkey) by the Roman Emperors Diocletian and Maximian in the early 4th century AD.According to various martyrologies and menologion, the persecution included the burning of a church that held numerous Christians on Christmas Day.