1.4 The cube with three times
Use the shadow to identify the time Horizontal side the actual time (Central Europe Time) is the time on our watches (after the correction of the time equation has been applied).
South side :
the true solar time that was still in use until the beginning of the 20th century. lt marks midday when the sun is exactly in the direction of the South.
At the Pleiades, the true solar time has an average difference of 32 minutes in the winter (1h32 minutes in the summer) with the actual time (CET).
East and West sides :
Greenwich Mean Time (GMT). lt is equal to the actual time -1h in the winter (-2h in the summer).