Earth is spinning so fast that today will be shorter – but is time going faster?

Time is speeding up – at least, one ‘type’ of time is

Lisa Maynard-Atem, 47, can barely remember what she had for breakfast three days ago, let alone what happened last year.

Halfway into 2025, we’ve had World War Three scares, deadly weather events, a whirlwind Trump presidency and high-profile court cases.

For people like Lisa, these happened yesterday. Or was it last month? Maybe 2016?

‘It still feels like it’s 2020 when we were in lockdown,’ Lisa, a branding consultant living in Manchester, told Metro.

‘One minute, it was January and my younger sister was getting married. Next, it was March, and Boris Johnson was telling us to stay home. One night, I went to bed and woke in 2025.’

Time flies when we’re having fun, as the saying goes. But lately, it’s flying even if we’re having no fun at all.

And you’re not imagining it – today will be one of the shortest days since records began. So, what’s going on? Is time really going faster?

Today is one of the shortest days in recent history

The Moon’s gravity will make tomorrow slightly shorter (Picture: Getty Images)

Broadly speaking, Earth takes 24 hours to spin around on its axis. Ocean tides, volcanic activity and earthquakes can affect rotation speed.

But Earth will complete a full rotation 1.25 milliseconds less than usual today, making it one of the shortest days on record.

This follows July 9 and July 10, which were 1.23 milliseconds and 1.36 milliseconds shorter, respectively.

The shortest day in modern history was July 5, 2024, cut short by 1.66 milliseconds.

All this lost time means we’ll have a ‘negative leap second’ in 2029 to keep timekeeping systems, such as GPS systems, accurate.

NEW YORK, NY - December 31: Y2K New Year's Eve Celelbration of 1999 into the year 2000 in Times Square on Decemner 31, 1999 in New York City. (Photo by Bill Tompkins/Getty Images)
Was the year 2000 25 years ago, or just yesterday? (Picture: Bill Tompkins/Getty Images)

Richard Holme, an emeritus professor of geophysics at the University of Liverpool, says the Moon is partly behind this.

The Earth’s gravitational dance with the Moon causes our planet to bulge, Holme tells Metro: ‘It takes some time for the material to recover and go back. Try pulling the skin on your arm – or better, find an old person like me and do it to them. When you let go, the skin returns, but it takes a little time.

‘In the time it takes to go down, the Earth has rotated, which means the bulge is not aligned with the direction of the Moon, but rotated out of line.

‘The out-of-line bulge is pulled by the Moon in the opposite direction to the rotation, so it tends to act against and reduce Earth’s rotation. This slows down the speed of rotation, and so increases the length of day.’

Today, the Moon is far enough away that a day will be shorter.

What is time?

We live in a four-dimensional world: length, width. depth and time. Time as a dimension neither flows nor ticks; it just is, and can be observed as things in our universe change.

There’s the time that clocks measure in seconds, minutes and hours. This is clock time, or objective time.

Finally, there’s mind time, also called subjective time, the time we feel passing.

How do we experience time?

Train times outside of Kyoto train station.
Milliseconds can make all the difference (Picture: Getty Images)

Today will only be a millisecond quicker than usual – but this doesn’t explain why people like Lisa feel like time has been a blur for years.

We know how our brains deal with senses, like touch and taste, yet how we sense time is a mystery, says Devin Terhune, a reader in experimental psychology at King’s College London.

Certain parts of the brain have been identified as possible stopwatches, such as the basal ganglia or cerebellum, ‘but their precise role in timing has not been clarified,’ Terhune tells Metro.

Research suggests that our variations in our experience of time may be due to variations in perceptual processing, such as our experience of salient or novel events or changes in sensory inputs.

‘So, a complex scene might be perceived as lasting longer than one in which there are very few changes.’

Stefano Arlaud, a researcher on time perception and metacognition of time perception at Queen Mary University of London, tells Metro that we might have an internal clock made of a ‘pacemaker’ that emits pulses that signify the passing of time.

A visitor to the Royal Observatory, takes a photo of the Gate Clock at the Greenwich Meridian in Greenwich Park, on 16th June 2022, in London, England. Greenwich Park is a former hunting park and one of the largest single green spaces in south-east London. (Photo by Richard Baker / In Pictures via Getty Images)
What many of us think of as time is ‘clock time’ (Picture: Getty Images/Richard Baker)

‘The more attentively we monitor time, the more pulses are registered, and the longer an event appears to last,’ he says.

This plays into how life seems to feel slower when you’re young and turbocharged as you get older, as it’s proportional to what we’ve already lived through. A year for a two-year-old is half their life, and is only one-70th for a 70-year-old.

‘Memory becomes the clock,’ says Arlaud, adding: ‘Events that lack novelty or variation feel short in memory because the brain has stored fewer temporal “markers”.’

So, is time going faster?

Commuters, most wearing face coverings to mitigate the spread of Covid-19, travel on a Transport for London (TfL) Victoria Line underground tube train carriage towards central London on January 5, 2022. - British hospitals have switched to a "war footing" due to staff shortages caused by a wave of Omicron infections, the government said Tuesday, as the country's daily Covid caseload breached 200,000 for the first time. (Photo by Tolga Akmen / AFP) (Photo by TOLGA AKMEN/AFP via Getty Images)
Lisa said that the coronavirus pandemic doesn’t feel like it’s too long ago (Picture: AFP)

We probably won’t clock – pun intended – that we’ve lost time today. But losing mind time is taking a toll on us.

What Lisa is describing is called ‘digital hyperstimulation’, which is turning our brains into ‘sieves’, says Arlaud.

He adds: ‘The digital environment offers relentless novelty – news updates, messages, entertainment – but this novelty is often shallow and rapidly replaced.

‘Paradoxically, this leads to poor memory encoding: the constant churn of low-significance content prevents the deep processing needed to form durable memory.’

Think of those nights you spent in bed scrolling on TikTok for a few minutes, only to realise it’s been three hours.

Several signs that read "The Clock is Ticking" lie in pile on the ground, next to a larger one, Climate Emergency Day, Union Square, New York City, July 22, 2024. All feature a graphic design with an image of part of the earth as a clockface, complete with hour and minute hands. In small print, the larger sign includes the message "#ActInTime". The text is a reminder that many believe humanity has only a few more years to make drastic changes to prevent average global temperatures from rising an additional 1.5 degrees Celsius. (Photo by: John Senter/UCG/Universal Images Group via Getty Images)
Many of us speak of time in the same way we do speed (Picture: UCG/Universal Images Group/Getty Images)

We now feel ‘behind’ all the time, leaving us stressed and burnt out.

‘People are not just misperceiving time – they’re mismanaging it, reinforcing a feedback loop of overload and disconnection,’ Arlaud warns.

Lisa knows this feeling all too well. Making every day meaningful as someone self-employed has left her in an ‘odd time warp’.

‘Weeks bleed into months,’ Lisa says, ‘and, suddenly, two years have passed.’

Get in touch with our news team by emailing us at webnews@metro.co.uk.

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