Gramaisc
Forum O. G.
The 'solar timer' for the hall light has been running for a full year now and we've had no power cut during that period. It's still turning the light on around three to six minutes in front of the published sunset for this location. That's not a bad thing, as there is a rise in ground to the west here, so the actual sunset is slightly earlier than the 'standard planet' figure. There is a little variation due to mechanical tolerances and the slight variations in mains frequency over time, although it all seems to even out in the end.The 'solar timer' has been operational for the last week, controlling the light in the hall. I happened to spot it turn on on Wednesday and I watched it just now, to see what the difference in timing was over two days.
It turned on three minutes later, which is right for the rate of change at this time of the year.
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Sunrise and sunset times in Stafford
Calculations of sunrise and sunset in Stafford – England – United Kingdom for March 2025. Generic astronomy calculator to calculate times for sunrise, sunset, moonrise, moonset for many cities, with daylight saving time and time zones taken in account.www.timeanddate.com
I am at the same latitude as Stafford, but a bit around the side of the planet, so things are about twenty minutes later here, in terms of the Sun's appearance in the sky. But the rate of annual variation is the same as it is in Stafford and the link above may be of some interest.
Barring any interference from power cuts, I can probably rely on it from here on.
I did find another one and that is running a background light in the Shed. I must get around to making that a little less 'temporary'.