The Time in Daylight feature, introduced in the Health app with iOS 17 in 2023, allows Apple Watch users to track their exposure to natural light effortlessly. This metric has been automatically recorded by the watch since the release of watchOS 10, utilizing the device's ambient light sensor to gauge environmental brightness without requiring any additional app or tracking mode activation.
Users can view their accumulated daylight data by accessing the Health app on their iPhone or iPad, where they can search for "daylight." This functionality reveals data dating back to June 2023, providing insights into outdoor exposure over time. The feature emphasizes the importance of sunlight for both physical and mental well-being, extending the benefits of health tracking beyond traditional exercise metrics.
For instance, recent personal discoveries indicated that time spent working outdoors contributed significantly to daylight exposure, surpassing more active days. By quantifying this metric, users can better recognize and appreciate healthy habits, reinforcing the positive impact of sunlight on mood and overall health.