I've just bought the Dayclox Digital Calendar Clock from
http://www.helpfulthings.co.uk/ selecting for no VAT, for my elderly mum.
Very clear day and time; option for 24 hour or 12 hour (which displays am or pm after the time). Date can be set for British or American style, ie
3, June 2015 or
June 3, 2015.
These are not radio controlled clocks so it will need adjusting manually in October. Between 7pm and 7am, the very clear white lettering dims to a bluish/grey so the clock is not quite so bright if being used in a bedroom. It is mains operated, but if there is a power cut or if the adapter is inadvertently switched off or if it needs moving to another room, an internal battery retains the settings and the time in the background and the day, time and date come back on, correctly, once the clock is switched back on again.
These
are expensive clocks, but it was bought as a special birthday present and my mother, who is finding it hard to keep track of days, is really delighted with it.
On Friday, I paid £49.99 (no VAT) plus postage (came 1st class signed for).
Note that the illustration on the website shows the earlier model. The latest version, which I received, has a comma after the date whether it is set for British or US date style. Also the size of the text for the date, month and year seems a little larger in the newer version (i8.1) that I received.