We developers can discuss this here instead of taking over the Feature Request. (I asked Dan to move our developer posts from the Feature Requets topic to here)

Indeed i forget to mention radiation below 138 w/sqm doesnt count for sunshine

its not an easy thing, but the weather display software does it what it does is it compares the expected solar radiation for your lat/long and time of day to what you are currently getting and when above a set threshold (adjustable) it counts as bright sunshine (i.e increases sunshine hours )

80% by default (user adjustable)

Ok just as i said above I think this is a good way to calculate sunshine

[image] Hours of sunshine it compares the expected solar radiation for your lat/long Where are you getting this data?

We are very very intelligent people and some of us write very complicated formulas. I’m sure we can handle it.

I can only get to the article I mentioned above from my university. It has formula’s :wink:

Hopefully @weather-display , in the spirit of WeatherFlow, will also share the formula he is using. I certainly look forward to seeing what you found.

Developing formula for Hours of Sunshine

Developers

GaryFunk August 31, 2018, 9:58pm 31

Where are you getting this data?

Topic		Replies	Views
Hours of sunshine Feature Requests	25	1866	February 26, 2022
Determining if it is Cloudy or Sunny Third-Party Integrations tempest	12	951	August 27, 2023
Solar Radiation, Illuminance, and UV Index, is there any difference? Developers	77	8787	May 13, 2024
Current Conditions tempest	29	1515	May 13, 2022
Theoretical UV calculation tool Developers	120	2012	August 23, 2020

Developing formula for Hours of Sunshine

Related topics