The lunar circle is a 19-year lunar cycle used in Easter. It is related to the calculation of the church lunar dates and the Easter boundary. In tables the lunar circle can also be written as the number of the circle and the year inside the circle, for example 393/1. The first number shows the number of the 19-year lunar circle from the creation of the world, the second year inside this circle. For 1941, summer 7449 from the creation of the world, the table shows 393/1. For 2025 the site shows 397/9: this is the 397th lunar circle and the 9th year inside it.