"mean solar time." YourDictionary, n.d. Web. 15 January 2019. <https://www.yourdictionary.com/mean-solar-time>.
mean solar time. (n.d.). Retrieved January 15th, 2019, from https://www.yourdictionary.com/mean-solar-time
mean solar time
Time measured with reference to the mean sun so that each day of the year is exactly 24 hours long. Mean solar time differs from solar time since the earth's orbital speed, and therefore the length of the solar day, changes with the seasons.