The sarsen stones of the Stonehenge monument could have been designed as a calendar to track a solar year, with each of the stones in the large sarsen circle representing a day within a month
that most of the sarsen stones were quarried from the same location 25 kilometres away, and were placed at Stonehenge at around the same time.is going hybrid, with a live in-person event in Manchester, UK, that you can also enjoy from the comfort of your own home,“All except two of the sarsens at Stonehenge come from that single source, so the message to me was that they’ve got a unity to them,” says Darvill. This indicates that they were intended for a common purpose.
“30, 5 and 4 are interesting numbers in a calendrical kind of sense,” says Darvill. “Those 30 uprights around the main sarsen ring at Stonehenge would fit very nicely as days of the month,” he says. “Multiply that by 12 and you get 360, add on another 5 from the central trilithons you get 365.” To adjust the calendar to match a solar year, the addition of one extra leap day every four years is needed, and Darvill thinks that the four station stones may have been used to keep track of this.
, an expert in ancient calendars at University College London. This has led Darvill to think that the five trilithon structures at Stonehenge might have marked a five-day mid-winter celebration, an idea bolstered by the fact that the tallest stone at the monument, part of one of the trilithons, points to the sunrise on the midwinter solstice.