A year at your window
Find your brighter side.
This windowToday
—h —min
of direct sun on the glass
When the light comes in
Explore a day to see its light
Turn the window. See the difference.
Compare directionsClear sky assumed · your skyline is included
Baked 2026-09-15 02:14 UTC for 2026-09-15 in Athens · open sky · refreshed nightly · live in your browser.
How it knows
Direct sun on this glass across the coming year, against the length of each day. The receding lines are the other facings, named at their ends; move along the year to preview a day.
All eight facings
Hours of direct sun today on each facing of glass; the bright spoke is this window. Tap a spoke to turn the window.
Clear sky assumed; "strength" weighs each minute by how squarely the sun meets the glass, and the street chip stands in for what this page cannot see.
Why the winter sun is the stronger one
In winter the low sun strikes this glass head-on; in summer it climbs overhead and skims past.
The floor matters less than the street
A building across the street takes the winter sun on every floor that does not clear its roof — a fist at arm's length is about ten degrees.
A north window is not a dark one
No direct sun for half the year, but the whole sky all day: the steady, shadowless light painters ask for. South of the equator, flip it.
Sol draws this arc through your actual window — hold the phone to the glass and its AR orbit shows where the sun will be, any hour of any day you scrub to.
Sol for iPhone · Coming soon