21 December 2099, Monday (08.12 according to the old style)
Church calendar for 21 December 2099
Saints commemorated
- Apostle Cephas I век
- Apostle of the Seventy Caesar, Bishop of Dyrrhachium I век
- Apostle of the Seventy Cephas, Bishop of Iconium I век
- Apostle of the Seventy Sosthenes, Apostle of the Seventy, Bishop of Colophon I век
- Apostle Tychicus of the Seventy, Bishop of Colophon I век
- Blessed, Fool for Christ Cosmas Of Verkhoturye 1652 — †1679
- Venerable Patapius of Thebes (of Constantinople) IV—VII вв. (датировка спорна)