Sundial at Glamis Castle This large sundial in the grounds of Glamis Castle is 21 feet (7 metres) high and was built in 1671. When built the sundial was used to set clocks in the castle. Since it was built in the 17th century a number of changes to time in Britain have taken place. In the 18th century Britain changed to the Gregorian Calander, in the 19th century time throughout the land was standardised with Greenwich Mean Time and finally in the early 20th British Summer Time.
Author: Philip Halling, License: CC BY-SA 2.0
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