An eclipse season is one of only two periods during each year when eclipses can occur, due to the variation in the Declination of the Moon. Each season lasts about 35 days and repeats just short of six months later, thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. During the eclipse season, the declination of the Moon's orbit is low, hence the Sun, Moon, and Earth become aligned straight enough (in syzygy) for an eclipse to occur. Eclipse seasons should occur 38 times within a saros period (6585.3 days).