Sleep and wake routines scheduled at sunrise/sunset

Didn’t find this in the roadmap or here, but I think this would be a simple thing that I, for one, really want.

It seems easy- I can already turn a light on or off at sunrise/set. I can also set a sleep routine for a specific time. So I wish I could set a wakeup routine ~at sunrise~ or a sleep routine ~at sunset~

Can we have?