Sunrise & Sunset Times

Where does HA pull the time associated with Sunrise and Sunset?

Thanks, Robert

Unless things have changed in the past two months, from the sun component of core:

https://www.home-assistant.io/integrations/sun/

https://github.com/home-assistant/core/tree/dev/homeassistant/components/sun

I would assume they are calculated based on the lat/lon for your location. NOAA and others publish the formulas NOAA calculator

And the height of your location is used to refine this.