What is the Certified Pool/Spa OperatorÂ® Certification Program? A CPOÂ® Certification provides individuals with the basic knowledge, techniques, and skills of pool and spa operations. This training has helped protect millions of swimmers by reducing hazards at aquatic facilities.
A year is the orbital period of the Earth moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility.
academic year - the period of time each year when the school is open and people are studying. school year. year - a period of time occupying a regular part of a calendar year that is used for some particular activity; a school year. academic session, academic term, school term, session - the time during which a school holds classes; they had to shorten the school term.