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Automating skylights with blinds to block direct sun
(lemmy.world)
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
Just a few ideas for very easy math:
Start with the sunrise and sunset times. You can have them automatically for your location.
Calculate the middle between these: this is your best "noon" time (free of DST etc).
Calculate the duration between these: the longer it is, the warmer.