It is celebrated 03.07.2026 according to the Julian calendar, or 16.07.2026 according to the Gregorian calendar. See what else we celebrate on that day here.
Martyrs Mocius (Mucian) and Mark (4th c.)
The Holy Martyrs Mokios and Mark were arrested as Christians and brought to trial by the governor Maximian. They refused to offer sacrifice to idols, for which they suffered death by beheading by the sword (IV Century).