English: Circular diagramme with three concentric coloured bands signifying the Meteorological, Astronomical and Celtic calendars. The outer circumference is divided into the twelve months of the year and also indicates the solstices, equinoxes and four Celtic festivals of Bealtaine, Lunasa, Samhain and Imbolc. The seasons are represented in each of the three bands as red for summer, yellow for autumn, blue for winter and green for spring. The colours shift between the bands indicating different measures of where the seasons start and end for each calendar.
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