19/03/2026
Here’s how Sunday Light works ⬇
Indoor environments are typically 50 - 100x dimmer than daylight. Your eyes adjust, so spaces feel bright, but your circadian system knows the difference. Over time, that gap between the light your body needs and the light your environment provides starts to show up in your energy, your focus, your sleep.
Traditional SAD lamps can deliver the required intensity, but only inches from your face. Delivering daylight-level brightness across an entire room comfortably, silently, and beautifully, required rethinking indoor lighting from the ground up.
That’s what Sunday is.
At 34,500 lumens, Sunday produces 30 - 50x more light than a typical SAD lamp. Enough to fill a space, not just a spot. Sustaining that output required an entirely new approach to cooling: a fully sealed, silent liquid-cooling system runs through the structure. No plumbing. No maintenance. Just consistent, high-output light, every day.
The light is scattered via a large reflective panel overhead, the same way the atmosphere disperses sunlight. The result is soft, indirect brightness that feels natural and comfortable, even at high intensity.
Colour temperature shifts automatically throughout the day from cool and energising in the morning to warmer and dimmer by afternoon. Your environment follows the sun. So your body can too.
Light designed for your body. Built for everyday life.
BrightLightTherapy
