What is the constellation of July 18?

Is the constellation according to the lunar calendar or the solar calendar? What constellation is July 18? What is the constellation of July 18 in the lunar calendar? Many people don't know much about constellations. In fact, astrology is based on the solar calendar, which was introduced to China from abroad, but foreigners don't say lunar calendar. So the constellations are calculated according to the solar calendar. If you were born on July 18 in the solar calendar, your sign is Cancer. If you were born in July 18 of the lunar calendar, your sign may be Leo or Virgo. ()