In this video the concept of orbital period is reviewed from a mathematical perspective. The objectives are to calculate the orbital period using Kepler's third law and explore examples of its application. The video covers the calculation of orbital periods for satellites in low earth orbits and geosynchronous orbits, as well as for planets orbiting around the sun. The formula for calculating orbital period is discussed, along with the importance of understanding elliptical orbits and their parameters. Examples are provided to illustrate how to apply the formula, including the calculation of the orbital period of the International Space Station and a geosynchronous satellite. Finally, the video concludes by applying the concept of orbital period to a planet orbiting around the sun, using Mars as an example.