[stumped]

ps. my mother had dementia and we went looking for solutions to "what time is it" etc. because she took to wandering down the high st at 5am wondering why the shops were closed
checkout the shops/sites who specialise in solutions for dementia/altzheimers. we did not not buy in the end but I recall finding clock/calendar solutions..

e,g, here, for UK ( but you need to check shops for your country)
https://shop.alzheimers.org.uk/daily...tches?page=all
and here
https://ukcareguide.co.uk/dementia-clock/
lots of advice on buying options.
early stages: they can still read a traditional clock face, later stages, they need something different...

update- spoiler tags fixed I hope

Spoiler:

If you are in the early stages of dementia
Those in the earlier stages of dementia may still be able to read a clock face, but need one that is clearly marked with all the numbers, as well as the day, month, and year.

Digital calendar day and date clocks could therefore be useful as they clearly show whether it is am or pm (or operate on a 24-hour clock mode) as well as the time and date, month and year. Some also have a digital alarm clock to help ensure that any medication is taken.

Day and night clocks may be suitable for people in the early stages of dementia. By recognising when it is day and night it may encourage patients who tend to wake up and wander around in the night to stay in bed and go back to sleep.

If you are in the mid to late stages of dementia
A person in the mid and later stages of dementia may struggle to read a clock face. It would then be better to choose a simple clock that states the day and what part of the day – morning, afternoon, evening and night – they’re in.

Bear in mind that people react differently to different products. What might suit one person might not suit another.

For example, whilst one person may find it useful to have a recorded message reminding them to take their medication, others may find it confusing. It is important to choose a product that suits the individual and their situation.

or search amazon for "dementia clock"

you will see tablet style solutions, which you could try to emulate or just buy one already done.