# Is it possible to approximate the solar radiation output for each hour of the day with the total output in a day?

If you know the total irradiance received by the sun during a single day, could you approximate how many irradiance each hour you get if you assume it was a clear day?

I am able to calculate the solar position at any point in a day. And I have data that gives the solar radiation of each day. Since we know the solar altitude angle is closer to 0° at sunset/sunrise and closer to 90° at noon, I was wondering if it was possible at all to estimate the solar radiation betweet say 8 a.m to 9 a.m, then 9 a.m to 10 a.m, etc...

• Perhaps you'll get a detailed scheme and calculation. But yes is possible and make sense for one location. And season. Sun is not at 90° everywhere even at noon. – Alchimista Mar 4 at 9:20