[woodcote]

Sounds like a great plan and I'm following your progress

An option I vaguely considered was a couple of the 'sunrise' alarm clocks - one in the west for sunset (they do that too) and one in the east for sunrise. Some even you give you a 'dawn chorus' of bird song! Of course, a separate switching off/on/dimming of main lighting would be necessary if you wanted strong 'daylight' in the room.

There are also dimmer timers for mains sockets - if you wanted to run a brighter mains light alongside the LEDs.