päivämääräilmaisuja

Päivämääräilmaisuja refers to the various ways dates are expressed in the Finnish language. Finnish date expressions typically follow a structure that includes the day, month, and often the year. The most common format for writing a date is day.month.year, for example, 25.12.2023. When speaking or writing out dates, the day is usually presented as an ordinal number. For instance, "kahdeskymmeneskahdeksas päivä joulukuuta" (the twenty-eighth day of December).

Months in Finnish are not capitalized unless they begin a sentence. The names of the months are: tammikuu (January), helmikuu (February), maaliskuu (March), huhtikuu (April), toukokuu (May), kesäkuu (June), heinäkuu (July), elokuu (August), syyskuu (September), lokakuu (October), marraskuu (November), and joulukuu (December). When stating a date in full, the month is often used in the genitive case, so "joulukuuta" becomes "joulukuun" in the genitive, leading to phrases like "joulukuun kahdeskymmeneskahdeksas päivä".

The year is usually stated in its full form, as in "kaksituhattakaksikymmentäkolme" (two thousand twenty-three). Shorter forms for years are also sometimes used, especially in informal contexts. Time expressions are often used in conjunction with dates to specify events more precisely. Finnish date expressions are generally unambiguous and follow a logical, consistent pattern.