About the proposal to calculate the local solar day

In a previous publication (Carrillo, 2021), some concepts necessary for the use of the local solar day concept were defined.In this article we will advance in numerically obtaining the time of day in which the local solar day concept provides radiation, taking into consideration, the concepts previously constructed such as hour-day index, theta ith hour, maximum theta, initial minimum theta and local minimum theta and we will connect them with a function that adjusts the radiation for a day in which the radiation is given with a zenith up to 90°.It will be an essential requirement to know the angle of the sun's radiation at each intermediate instant, in which the observer wants to know the time of said day, so a transducer is proposed that measures that angle.In addition, the 4th order and 6th order models are compared using the quadratic difference.And then, it is integrating the mentioned difference to know the total difference during the day.1.