21 October 2100, Thursday (07.10 according to the old style)
Church calendar for 21 October 2100
Saints commemorated
- Hierarch Mark of Rome 18 января — †7 октября 336
- Martyr Bacchus of Rome III в. — ок. 303
- Martyr Pelagia of Tarsus † ок. 287
- Venerable Gerasimos of Kefalonia ок. 1509 — 1579
- Venerable Martinian of Beloozero ок. 1400 — 1483
- Venerable Sergius of Nurma (Obnora) ? — 1412
- Venerable Sergius of Obnora (Nurma) ? — 1412