Neptune is one of the “generational planets,” meaning it changes signs very slowly. Since Neptune is very far away from the sun, its huge orbit takes 165 years to go around the sun just once (compared to 1 year for Earth). This means it changes signs every 14 years or so, and everyone born within that 14 year period will have the same Neptune sign. However, due to the Earth’s rotation every 24 hours, the house Neptune occupies changes every 2 hours and is much more individual in a birth chart. Neptune is the Roman name of the Greek Poseidon, god of the deep, unknowable sea, and as such this planet represents dreams, illusions, and spirituality in astrology. On a collective level, the Neptune sign can represent the spirit of all the people born within the 14-year period. On a more individual level, the house Neptune occupies in your chart may indicate the area of your life where your spiritual potential will manifest itself. Neptune’s house can also indicate an area where delusions or vague misunderstandings need to be faced in order to grow and thrive. Neptune traditionally rules dreamy Pisces, but that may not be reflected in your chart.