No, I am neither, and especially not an astrologist (pseudoscience), but I am pointing out how the Mayan calendar reflects Mayan mythological (and astrological) beliefs, and that the calendar ends on a day when the sun reaches a mythologically-significant place during the winter solstice. This place is where the ecliptic criss-crosses the galactic equator. As for what these terms mean:
Our solar system is thus situated within the outer regions of this galaxy, well within the disk and only about 20 light years "above" the equatorial symmetry plane (to the direction of the Galactic North Pole, see below), but about 28,000 light years from the Galactic Center. Therefore, the Milky Way shows up as luminous band spanning all around the sky along this symmetry plane, which is also called the "Galactic Equator".
The great circle of the celestial sphere that lies in the plane bisecting the band of the Milky Way, inclined at an angle of approximately 62° to the celestial equator. Also called galactic circle.
The ecliptic is the intersection of the ecliptic plane and the celestial sphere. A more intuitive definition would be to say that the ecliptic is the apparent path of the Sun during a year as seen from Earth. The orbits of most planets in the Solar System lie very close to it. Seen from the Earth, this is a bisecting great circle, superimposed upon the celestial sphere, which contains the different points of the Sun's path, relative to the background stars, over the course of a year. The zodiac also lies along the ecliptic plane.