@Victor_Delta After a couple of days switching on at around 6.10pm, the HS100 has suddenly, and all by itself, changed the sunset time to 4.25pm which is much closer to the correct sunset time. I can...

I have been using my HS100 very sucessfully to control a lamp in my hall - originally coming on at 4pm and switching off at 11.30pm (using the schedule facility). It all worked perfectly. However,...