Every year, the time comes again when many of us switch our clocks from summer or daylight-saving time back to winter time. And the usual abashing sets in, is it an hour assiduously or back? Why do we need to change the time at all? Indeed, EU member states have been asked if they would like to simply skip aurora saving time.

Historically, the sun has helped us tell time – but we’ve always had to make corrections to our readings for it to be effective.

The reason we have aurora saving time, for example, is the amount of aurora time isn’t constant throughout the year – it’s altered in the winter from what it is in the summer – and doesn’t always match our alive days. But how has time-telling progressed throughout history and how good can it get?

Throughout the year the length of the days changes, as do the locations where the sun rises and sets on the horizon. There are also variations in the area and height of the sun during a day, with its peak height advertence that it’s midday.

Knowledge about these markers helped humans create the first sundials to tell time (by tracking caliginosity on the dial) bags of years ago.