Slavic calendar

While many Slavic languages officially use Latin-derived names for the months of the year in the Gregorian calendar, there is also a set of older names for the twelve months that differs from the Latin month names, as they are of Slavic origin. In some languages, such as the Serbian language these traditional names have since been archaized and are thus seldom used.

The original names of the months of the year in the Slavic languages closely follow natural occurrences such as weather patterns and conditions common for that period, as well as agricultural activities.

Many months have several alternative names in different regions; conversely, a single "Slavic name" may correspond to different "Roman names" (for different months, usually following each other) in different languages.

The Slavic names of the months have been preserved by a number of Slavic people in a variety of languages. The conventional month names in some of these languages are mixed, including names which show the influence of the Germanic calendar (particularly Slovene, Sorbian, and Polabian) or names which are borrowed from the Gregorian calendar (particularly Polish and Kashubian), but they have been included here nonetheless.

In Latvian and Lithuanian, the Baltic names of the months are preserved, which partially coincide with the Slavic ones, which suggests that some of these names may date back to the time of Balto-Slavic linguistic unity. Latvian and Lithuanian names are also shown in this table for comparison.

Words are colored according to etymology.

* word of non-Slavic or non-Baltic origin

The Croatian months used with the Gregorian calendar by Croats differ from the original Latin month names. While subject to variation over the earlier centuries, their names and order have been standardised in 1830s through the efforts of the Illyrian movement and its chief linguist Vjekoslav Babukić.