The Armenian calendar is divided into 12 months of 30 days each, plus an additional (epagomenal) five days are called aveleacʿ ("superfluous"). Years are usually given in Armenian numerals, letters of the Armenian alphabet preceded by the abbreviation ԹՎ for t’vin "in the year" (for example, ԹՎ ՌՆԾԵ "in the year 1455").