Temporal functors form a semantically diferentiated set of functors of free modifications which express various temporal points or intervals that the content of a governing modification relates to. Individual temporal functors differ according to which of the possible questions about time they answer.

Modifications with temporal functors provide temporal localization of events or states, therefore they relate primarily to verbs, nouns, and adjectives denoting event. However, they can also relate directly to nouns not denoting events (e.g. cukroví od Vánoc.TFRWH (=lit. sweets since Christmas), domy v minulém století.TWHEN (=lit. houses in the last century)).

The sections devoted to individual functors are arranged in alphabetical order according to the abbreviations used for the functors. Disregarding the alphabetical order, the list begins with the section on the functor TWHEN as it conveys the most general temporal meaning.