Improve sleep regulation
Bright light in the morning is one of the strongest signals your body uses for regulating its natural sleep-wake cycle.
Bringing sunlight indoors
A Sunlight Machine.
Daylight-level brightness indoors, designed to support mood, focus, and natural sleep rhythms.
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The science
Why bright light matters for your health
Boost mood and energy
Decades of research show that bright light is effective for seasonal affective disorder (SAD).
Enhance focus and performance
Bright light exposure is associated with improved concentration and cognitive speed.
human-centric lighting
A new category of lighting
Most indoor lighting is designed for visibility and decoration. Sunday is designed for the human body.
It delivers daylight at the intensity, quality, and scale the body responds to across an entire space, to quietly transform how you feel throughout the day.
From cool, energising morning light to warmer evening tones (2650K - 6000K), Sunday mirrors the natural progression of the sun throughout the day, helping your environment work with your body, not against it.
This is human-centric lighting.
Where Sunday is used
-
At home
For people who want their home to support how they feel, every day.
“I can’t believe the difference the light has made. It’s like a beam of sunshine above our kitchen table. Every morning, I notice the immediate effect it has on me and my family’s mood." -
In the office
For teams where energy, focus, and performance matter.
“When it turned it off, I laughed at the wintery greyness that replaced it. When back on, I appreciated it even more.” -
In hotels & wellness spaces
For environments designed to restore, not drain.
“It felt like being bathed in sunshine. It's totally energising."
Where science meets design
The Sunday Light Difference
Bright enough to matter
Daylight-level brightness that has a real physiological impact.
High-fidelity, human-centric
High-quality, full-spectrum light that feels natural, even at high brightness.
Design-led engineering
Handcrafted in London and designed to effortlessly integrate into exceptional spaces.
Light that follows the day
Designed for all-day use, from bright mornings to softer evening tones.
Wall of Love
Testimonials from customers, press, and the broader community.
Some notes on @thesundaylight, a sort of… artificial skylight?
It feels good to spend the day in daylight. But that doesn't happen when I'm working inside. Especially in the winter. So, for years, I've used super-bright LEDs while I work. They quite noticeably improve my energy…
It feels good to spend the day in daylight. But that doesn't happen when I'm working inside. Especially in the winter. So, for years, I've used super-bright LEDs while I work. They quite noticeably improve my energy…
The Sunday light is extraordinary. We change the light according to our mood; and our mood changes with the light. Way cool thing to get done!
daylight in the office from @thesundaylight
Nat Martin is the kind of builder I admire—his product feels like art, but it's also incredibly functional. In many ways, it reflects how I think about our work at Notion.
He's a Notion customer! And as of this weekend, I became his customer :)
He's a Notion customer! And as of this weekend, I became his customer :)
I was incredibly impressed by the Sunday Light. It produces a level and quality of light that approximates sunlight, yet its design allows prolonged use that is both comfortable and convenient.
Critically, you do not have to sit next to the device to get the levels of light that will deliver physiological benefits.
Critically, you do not have to sit next to the device to get the levels of light that will deliver physiological benefits.
It felt like being bathed in sunshine.
When Hammett turned it off, I laughed at the wintery greyness that replaced it. When he turned it back on, I appreciated it even more.
For SAD sufferers and those who hate the long winter evenings, half an hour beneath the Sunday should help banish the blues.
Wow wow wow. It's so perfect. I'm just sat here admiring. It's just sublime. Cheering me up on a dreary day. It's totally energizing.
It is a gloomy Oxford winter but under our Sunday Light, it is astonishingly bright and cheery! This terrific piece of engineering solves an important problem - robustly and elegantly.
I can't believe the difference the light has made. It's like a beam of sunshine above our kitchen table. Every morning, I notice the immediate effect it has on me and my family's mood.
@natmart_in I've seen it! The cast is truly incredible. It really does feel like sunlight
This chandelier for circadian rhythms casts 10,000 lux at eye level, equivalent to ambient daylight, and outstripping the measly 500 lux found in most well-lit offices.
The science is clear that we need more light. The current options don't deliver. Sunday Light does.
The Sunday Light by Sunday Lighting in situ... at Otras Formas.
Dimmable LED light fixture in stainless steel and acrylic with titanium nano-particles
The Sunday Light's large reflective panel scatters light the same way that the atmosphere does. When the light is on, the light source mimics the sun, reflected as a bright white spot, and the surface of the panel glows with a luminous, sky blue light.
At the heart of the luminaire is an LED that produces over 34,000 lumens, cooled by water flowing throughout the structure.
At its brightest the Sunday Light creates the effect of standing under a clear blue sky on a sunny day. However deep dimming means that Sunday isn't just a sunlight machine - it can be as soft and soothing in the evening as it is powerful in the daytime, featuring a color changing light output, from bright daylight (6000 K, CRI 95+) to a warm evening light (2650 K), enabling perfect synchronicity with the sun.
Dimmable LED light fixture in stainless steel and acrylic with titanium nano-particles
The Sunday Light's large reflective panel scatters light the same way that the atmosphere does. When the light is on, the light source mimics the sun, reflected as a bright white spot, and the surface of the panel glows with a luminous, sky blue light.
At the heart of the luminaire is an LED that produces over 34,000 lumens, cooled by water flowing throughout the structure.
At its brightest the Sunday Light creates the effect of standing under a clear blue sky on a sunny day. However deep dimming means that Sunday isn't just a sunlight machine - it can be as soft and soothing in the evening as it is powerful in the daytime, featuring a color changing light output, from bright daylight (6000 K, CRI 95+) to a warm evening light (2650 K), enabling perfect synchronicity with the sun.
Our advisors
Scientific and performance advisory board
We work with world-leading experts in circadian neuroscience and human performance to guide how we design and validate Sunday.
Will Ahmed
Founder, WHOOP
Will founded WHOOP, the performance wearable used by elite athletes, teams, and organisations worldwide to measure strain, recovery, and sleep. His experience turning physiological data into everyday coaching helps ensure Sunday supports real-world performance, recovery, and wellbeing.
Professor Russell Foster, University of Oxford
Circadian Neuroscientist
Russell is a leading circadian neuroscientist and sleep researcher. His work on how specialised light-sensing cells in the eye set the body clock underpins modern understanding of how light affects sleep, mood, and long-term health, and informs how we engineer Sunday's daylight.
Installation
Handmade in London, delivered worldwide
Each Sunday light is handmade to order in our London workshop, with a 2 - 4 week lead time. We offer a 3 year warranty.
Sunday installs in the same way as a high-end chandelier, suspended via an adjustable cable system. No plumbing is required, and no ongoing maintenance is needed.
We arrange professional installation across the UK, Europe, and the US, ensuring Sunday integrates seamlessly into your space.
34,500
lumens
Full-spectrum light output
95+
CRI
Colour rendering index
2650-6000K
colour range
Warm evening light to midday daylight
"Sunday combines clever engineering with beautiful light in a rather beguiling way."The Financial Times
Experience indoor sunlight
Handmade in London. Free international shipping. 3-year warranty.