| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
| Day not set Mieczysław Biernat Death - January 1966 (20 year anniversary) | 113 Dec | 214 Dec Isak Chargaff Birth - 14 December 1842 (143 year anniversary) | ||||
| 315 Dec | 416 Dec Lewko Kowalczuk Birth - 16 December 1943 (42 year anniversary) | 517 Dec Józef Jan Bohaczek Birth - 17 December 1950 (35 year anniversary) | 618 Dec | 719 Dec | 820 Dec | 921 Dec |
| 1022 Dec | 1123 Dec | 1224 Dec | 1325 Dec | 1426 Dec | 1527 Dec Jakub Sagan Death - 27 December 1937 (48 year anniversary) | 1628 Dec |
| 1729 Dec Jan Bratkowski Birth - 29 December 1796 (189 year anniversary) | 1830 Dec | 1931 Dec | 201 Jan | 212 Jan Kazimierz Józef Rybak Birth - 2 January 1934 (52 year anniversary) Zygmunt Porbes Birth - 2 January 1915 (71 year anniversary) Józef FranciszekBohaczek Birth - 2 January 1900 (86 year anniversary) | 223 Jan | 234 Jan |
| 245 Jan | 256 Jan | 267 Jan Jan Szwarc Birth - 7 January 1906 (80 year anniversary) | 278 Jan Antoni Płoskonka Birth - 8 January 1915 (71 year anniversary) | 289 Jan | 2910 Jan |
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