20 December 2066, Monday (07.12 according to the old style)
Church calendar for 20 December 2066
Saints commemorated
- Hierarch Ambrose of Milan ок. 340 — 397
- Martyr Philothea of Tarnovo (of Argeș) ок. 1206 — ок. 1218 (12 лет)
- Venerable Nilus of Stolobny (Seliger) кон. XV в. — 1554/1555
- Venerable Venerable Anthony of Siya 1477–1556