Believed to co-rule Sagittarius
Earth is not usually talked about in everyday astrology. For one thing, it’s always the point opposite from the Sun, and always shares the same relationships to the planets as the Sun does.
Earth is considered the plane of experience. And despite the emphasis on the stars and planets, earth may be the most important element of all for astrology. It too has energies that must be taken into account in a chart.
Earth is always in opposition to the Sun-wherever the Sun is. While there is no definite Sign that Earth rules (some think it may be either Virgo or Taurus, one of the dual rulerships for now).
In any event, look for wherever the Sun is, look for the point in the chart opposite to it, and then use what you can for now.