
My new favorite Apple Watch and Apple Health metric is one that has been quietly working in the background for years. Specifically, it’s a bit of a hidden feature for tracking a great healthy habit: Time in Daylight.
Time in Daylight arrived as a metric in the Health app as part of iOS 17 in 2023. Since watchOS 10, Apple Watch has automatically tracked Time in Daylight just by wearing it.
The feature works by using the watch’s ambient light sensor to measure your








