Keeping time at Stonehenge

Scholars have long seen in the monumental composition of Stonehenge evidence for prehistoric time-reckoning—a Neolithic calendar. Exactly how such a calendar functioned, however, remains unclear. Recent advances understanding phasing highlight unity sarsen settings. Here, author argues that numerology these elements materialises perpetual based on tropical solar year 365.25 days. The indigenous development north-western Europe is possible, but an Eastern Mediterranean origin also considered. adoption was associated with spread cosmologies during third millennium BC and used to regularise festivals ceremonies.