2011-12-01: 120th Anniversary of the Military Medical Academy

2011-11-17: Christmas 2011

2011-11-07: 100th Birthday of Josif Tsankov

2011-10-31: International Day of the Black Sea

2011-10-29: First Bulgarian Participation in the Dakar Rally

2011-10-28: Dogs in Space

2011-10-27: 145 Years Railways in Bulgaria

2011-10-21: 200th birthday of Franz Liszt

2011-10-10: 150th Birthday of Fridtjof Nansen

2011-08-25: Sailing Regatta from Waterford to Halmstad

2011-07-29: Poisonous Mushrooms

2011-07-26: 1200th Anniv. of Khan Krum's Victory at the Varbitsa Pass

2011-06-29: Fish of the Danube

2011-06-10: Bulgarian Regions (II) - North-Central Bulgaria

2011-05-27: 120 Years Philatelic Literature in Bulgaria

2011-05-02: 20th Anniv. of the Commission on Protection of Competition

2011-04-30: Imperial Edict of Religious Tolerance

2011-04-28: Europa (C.E.P.T.) 2011 - Forests

2011-04-12: 50th Anniversary First Space Flight and First Venus Probe

2011-04-11: 20 Years Atlantic Club in Bulgaria

2011-04-01: 35 Ann. of the Discovery of the Asteroid Gabrovo

2011-01-31: Birth Centenary of Vanga

2011-01-24: 125 Years Plovdiv Ninth Infantry Regiment

2011-01-07: Leopard Seal (Hydrurga leptonyx)