All these things that I have done

I would expect it to vary enormously depending on what periods were studied at school, personal interest and a memory for dates. We started at the Stuarts so I had her death pegged and guestimated based on the belief that she had one of the longest reigns (less than Vicki and possible George III and since - I now realise - overtaken by Liz II), and was out be a decade. I could probably do the monarchs in order after a bit of thought - mostly because of personal interest as we did nothing much between William I and James I at any of my schools - but spot dates before the tudors would be much vaguer.