The early Germanic calendars were the regional calendars used among the early Germanic peoples before they adopted the Julian calendar in the Early Middle Ages. The calendars were an element of early Germanic culture. The Germanic peoples had names for the months that varied by region and dialect, but they were later replaced with local adaptations of the Julian month names. Records of Old English and Old High German month names date to the 8th and 9th centuries, respectively. Old Norse month names are attested from the 13th century. As with most pre-modern calendars, the reckoning used in early Germanic culture was likely lunisolar. As an example, the Runic calendar developed in medieval Sweden was lunisolar, fixing the beginning of the year at the first full moon after winter solstice. Months The Germanic calendars were lunisolar, the months corresponding to lunations. Tacitus writes in his Germania (Chapter 11) that the Germanic peoples observed the lunar months. The lunisolar calendar is reflected in the Proto-Germanic term "month" (Old English , Old Saxon , Old Norse , and Old High German , Gothic ), being a derivation of the word for "moon", — which shares its ancestry with the Greek mene "moon", men "month", and Latin mensis "month". Days and weeks Tacitus gives some indication of how the Germanic peoples of the first century reckoned the days. In contrast to Roman usage, they considered the day to begin at sunset, a system that in the Middle Ages came to be known as the "Florentine reckoning". The same system is also recorded for the Gauls in Caesar's Gallic Wars. "They assemble, except in the case of a sudden emergency, on certain fixed days, either at new or at full moon; for this they consider the most auspicious season for the transaction of business. Instead of reckoning by days as we do, they reckon by nights, and in this manner fix both their ordinary and their legal appointments. Night they regard as bringing on day." The concept of the week, on the other hand, was adopted from the Romans, from about the first century, the various Germanic languages having adopted the Greco-Roman system of naming of the days of the week after the classical planets, inserting loan translations for the names of the planets, substituting the names of Germanic gods in a process known as . Calendar terms The year was divided into a