Eclipse geometry at sea level. (A) Schematic (credit: NASA) of the solar eclipse on 20 March 2015 at the Earth’s surface. The path of the total solar eclipse is denoted by the strip bounded by dark blue curves, while paths of the partial (0.80, 0.60, 0.40, and 0.20 magnitude) eclipse are plotted with light blue curves. The progression of the greatest eclipse is marked by green curves with time stamps (UT). (B) Times of the maximum eclipse (solid red lines) and maximum obscuration levels (dotted blue lines) over Europe. (C) Azimuth (solid red lines) and zenith angle (dotted blue lines) at the maximum eclipse over Europe. Note: Cylindrical equidistant mapping is applied in (B) and (C).