The autumn equinox has arrived, but the bigger change for many businesses is practical as the working day starts to shrink fast.
Around late September, London loses roughly four minutes of daylight a day. That might not sound much but over a working week, it’s close to 20 minutes.
For anyone doing site work, deliveries, inspections or work that’s easier in good light, those minutes soon add up.
How quickly is the light fading?
Quickly enough to change jobs that felt easy a few weeks ago.
The exact sunset time isn’t the point. A job planned around an August routine can now run into dusk even when nothing else goes wrong. A late customer, traffic or a lengthier unload can be enough to push the last part of the day into dim light.
What checks should you do?
Start with the things that help drivers see and be seen. Check headlights, brake lights, indicators and number-plate lights. Clean the lenses rather than assuming a working bulb is doing its job properly through road grime.
Do the same with the windscreen. Worn wipers, low screenwash and dirty glass become far more noticeable when low sun, rain and headlights are involved.
Figures from the DVSA show lamps, reflectors and electrical equipment as one of the most common reasons for initial MOT failures, affecting around 11% of light vans and cars (Class 3 & 4) and 18% of heavier vans (Class 7).
The figure for lamps, reflectors and electrical equipment failures is 5 to 7% for HGVs, depending on the quarter.
So what changes should you make ASAP?
Anything reliant on visibility should get first claim on the daylight.
That might mean site work, loading, external inspections, measuring up or deliveries where drivers need to find unfamiliar entrances and read signs.
The easiest adjustment is to reverse the order of the day. Put outdoor or visibility-heavy work first. Move indoor jobs, paperwork, quotes, stock checks and calls to later.
Realistic scheduling beats optimistic scheduling. If the last job needs 45 minutes in decent light, don’t book it to start 20 minutes before sunset.
Why does a clean windscreen matter so much?
Because low autumn sun and oncoming headlights expose every smear.
A windscreen that looks acceptable at midday can become hard work later when light catches dirt, grease or old wiper marks. Clean the inside as well as the outside and replace wipers before they start streaking badly.
It is a small job, but it reduces the effort a driver needs just to see clearly.
How do you stop darker days turning into longer days?
Don’t quietly let the working day stretch to compensate.
When daylight disappears earlier, people try to “just finish this one” rather than change the schedule. That can mean a job takes longer, the drive home starts later and tiredness builds.
HSE guidance says employers should manage risks for people driving for work and avoid putting drivers under pressure to meet targets in ways that encourage unsafe driving.
What changes when the clocks go back?
On Sunday 25 October 2026, the clocks go back one hour at 2am.
The morning gets lighter by the clock, but the evening changes immediately. A journey or last job that finished in daylight suddenly feels very different.
So use the lead-up month as a planning window. Move light-dependent jobs earlier now, check vehicles before dark driving becomes routine and give drivers enough room in the schedule so finishing the job doesn’t mean rushing the journey.
Autumn will take the daylight either way. The trick is not letting it take a chunk of your working day with it.
