Time Outside Is Good
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Daylight Ledger
A running record of the time you spend outside and the cover you wear while you're there. Two hours a week in green space is the threshold where people start reporting better health and wellbeing — this keeps score of yours, and of the shade, cloth and SPF that let you keep going back.
Today's sun
—Log time outside
Takes about twenty secondsReapply clock
Two-hour ruleA full-body coat is about 30 ml — a shot glass. Face, ears and neck take roughly a teaspoon between them. Most people apply about a quarter of that, which is why the clock matters more than the number on the bottle.
Today so far
Worth knowing
Shadow ruleWhen your shadow is shorter than you are tall, the sun is high enough to burn you quickly. Long shadow, low risk.
80%of UV comes through thin cloud. An overcast day is a cooler day, not a safer one.
×1.8Fresh snow nearly doubles the UV reaching your face. Water adds about a quarter, dry sand about a sixth.
UPF 50fabric lets through a fiftieth of the UV that hits it, and it does not wear off at hour two.
Where the day's UV sits
Clear-sky model, local solar timeYour inputs
Time to redden
Minutes outside, by week
Goal line at 120 minMilestones
This week
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All time
Recent sessions
Today's prompt
These prompts ask what your body did and what you noticed — never how it looked. Sun care lasts longer when it reads as looking after yourself rather than fixing yourself.