5 September 1931, Saturday (23.08 according to the old style)
Church calendar for 5 September 1931
Saints commemorated
- Hieromartyr Irenaeus, Bishop of Lyon ок. 130 — ок. 202
- Hierarch Theonas of Alexandria патриарх Александрийский 282–300
- Hieromartyr John (Ivan) Vostorgov, Archpriest 1867 — 1918
- Martyr Lupus of Thessalonica † ок. 306