 Anatolius describes the vernal equinox as a section of the first zodiacal sign from March 22 to 25.Although he defines March 22 as the Sun's entry into the first sign, he never defines it as his equinox, but as Ptolemy's equinox.This does not exclude that in reality he used Ptolemy’s equinox as the theoretical lower limit date for all of his dates of Paschal full moon.