Have you ever looked at the clock and wondered where the last three hours went? Or found yourself genuinely convinced that a task would take ten minutes, only to discover an hour has disappeared?
Perhaps you’ve sat down to answer a couple of emails, become distracted by something interesting, and suddenly realised it’s time for bed.
For many people with ADHD, autism, or a combination of both, this isn’t simply a matter of poor organisation or bad time management. It can be the result of something often referred to as time blindness – a very real difficulty with perceiving, estimating and managing the passage of time.
For years, I assumed that everyone experienced time in roughly the same way and that I was somehow getting it wrong. I bought planners, diaries, calendars and reminder apps. I promised myself I would be more organised. I tried harder, became more frustrated, and blamed myself when things still didn’t seem to work.
What I didn’t understand at the time was that my relationship with time wasn’t quite the same as many other people’s.
What is Time Blindness?
Time blindness isn’t a formal diagnostic term, but it is widely recognised within the neurodivergent community and describes something that many people with ADHD and autism experience every day.
Whilst many neurotypical people seem to have an intuitive sense of how much time has passed, how long something is likely to take, or how close they are to a deadline, neurodivergent people often describe time as feeling much less predictable and far more abstract.
Rather than moving steadily from one moment to the next, time can feel slippery, elusive and difficult to grasp. Hours can disappear without warning, whilst waiting ten minutes for something can feel like an eternity. Future events can seem comfortably distant right up until the moment they are suddenly and unexpectedly upon us.
If any of this sounds familiar, you are certainly not alone.
Why does ADHD affect time perception?
ADHD is often described as a condition that affects attention, but its impact extends much further than that. ADHD affects executive functioning – the collection of mental processes responsible for planning, prioritising, organising, initiating tasks and regulating behaviour.
These same systems also play an important role in how we perceive and respond to time. As a result, many people with ADHD find themselves consistently underestimating how long tasks will take, losing track of time when focused on something interesting, leaving things until the last minute despite every intention of starting sooner, or feeling genuinely surprised when an important deadline arrives.
This is one of the reasons why comments such as “just manage your time better” can feel so frustrating. Most people with ADHD are already trying incredibly hard to manage their time. The challenge is not a lack of effort or motivation. The challenge is that the internal mechanisms that help people monitor and track time don’t always operate in the same way.
What about Autism?
Although time blindness is often discussed in relation to ADHD, many autistic people also report difficulties with time perception and time management.
For some, the challenge lies in estimating how long activities will take or transitioning from one task to another. For others, it is linked to becoming deeply absorbed in an area of interest and losing awareness of the passing hours.
Many autistic people rely heavily on routines, calendars, reminders and structure, not because they are naturally organised, but because these external systems provide a sense of certainty that their internal sense of time may not.
As with so many aspects of neurodivergence, the experience varies considerably from person to person, but difficulties relating to time are far from uncommon.
The AuDHD experience
For those who are both autistic and ADHD, time can sometimes become a source of ongoing internal conflict.
Many AuDHD adults describe desperately wanting structure, predictability and routine whilst simultaneously struggling to maintain those systems consistently.
You may value punctuality and become anxious about being late, yet still find yourself rushing out of the door at the last minute. You may spend hours creating the perfect planning system, only to forget to use it a week later. You may crave order whilst feeling unable to sustain it.
It can be a confusing and often exhausting experience, particularly when you don’t yet understand why it keeps happening.
Why does perimenopause make it feel worse?
This is perhaps the piece of the puzzle that receives the least attention, yet it is often the point at which many women begin to notice these challenges more acutely.
For years, many neurodivergent women unknowingly compensate for difficulties with executive functioning through anxiety, perfectionism, people-pleasing and sheer determination. These coping strategies may not always feel healthy, but they often help keep life ticking along.
Then perimenopause arrives. As hormone levels begin to fluctuate and decline, many women notice changes in concentration, memory, organisation, emotional regulation and mental clarity. Sleep often becomes more disrupted, stress feels harder to manage and tasks that once felt manageable suddenly require much more effort.
At the same time, many of the coping mechanisms that have supported them for decades begin to feel less effective. The result is that challenges which were once quietly managed in the background can suddenly become impossible to ignore.
Many women describe feeling as though they have lost confidence in their ability to cope. They wonder why life feels harder than it used to. Some begin questioning whether they are developing dementia or experiencing burnout. For others, it becomes the catalyst for discovering ADHD, autism or both.
The difficulties themselves are rarely new. What changes is the ability to compensate for them.
A different relationship with time
One of the most powerful aspects of discovering the concept of time blindness is that it allows people to view their experiences through a different lens. So many neurodivergent adults have spent years criticising themselves for being late, forgetting things, underestimating tasks or feeling permanently overwhelmed by time. They have internalised messages that they are disorganised, lazy, careless or simply not trying hard enough.
In reality, many have been working far harder than those around them simply to keep pace with a world that expects everyone to experience time in the same way.
Understanding time blindness doesn’t remove deadlines, appointments or responsibilities, but it can help replace self-judgement with self-understanding.
And that understanding matters. Because when we stop viewing ourselves as broken or failing, we become much better able to build systems, routines and supports that genuinely work for our brains.
Rather than fighting against the invisible clock, we can begin to understand how it works for us.