| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
| Day not set Mieczysław Biernat Death - January 1966 | 114 Dec Isak Chargaff Birth - 14 December 1842 (123 year anniversary) | 215 Dec | 316 Dec Lewko Kowalczuk Birth - 16 December 1943 (22 year anniversary) | 417 Dec Józef Jan Bohaczek Birth - 17 December 1950 (15 year anniversary) | 518 Dec | |
| 619 Dec | 720 Dec | 821 Dec | 922 Dec | 1023 Dec | 1124 Dec | 1225 Dec |
| 1326 Dec | 1427 Dec Jakub Sagan Death - 27 December 1937 (28 year anniversary) | 1528 Dec | 1629 Dec Jan Bratkowski Birth - 29 December 1796 (169 year anniversary) | 1730 Dec | 1831 Dec | 191 Jan |
| 202 Jan Kazimierz Józef Rybak Birth - 2 January 1934 (32 year anniversary) Zygmunt Porbes Birth - 2 January 1915 (51 year anniversary) Józef FranciszekBohaczek Birth - 2 January 1900 (66 year anniversary) | 213 Jan | 224 Jan | 235 Jan | 246 Jan | 257 Jan Jan Szwarc Birth - 7 January 1906 (60 year anniversary) | 268 Jan Antoni Płoskonka Birth - 8 January 1915 (51 year anniversary) |
| 279 Jan | 2810 Jan | 2911 Jan Franciszek Tymecki Birth - 11 January 1926 (40 year anniversary) Roman Jan Rybak Birth - 11 January 1908 (58 year anniversary) | 3012 Jan Max Lieber Death - 12 January 1963 (3 year anniversary) | 3113 Jan Norbert Grubin Birth - 13 January 1883 (83 year anniversary) |
| ||||||||||||||||||||||||||
