The seasons, where you are
Reading your year.
See the season where you stand, by the sun and by the calendar, worked out in your browser.
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Your time in daylight, every day of the year.
Sol for iPhone is coming soon, with the day’s light on your Lock Screen and your wrist, and an alert when tonight is worth walking out for.
The sun through the year.
You stand at the middle of your horizon. The dots are the sun’s path that day, the sun at its highest. Walk the year and the path grows and shrinks with the seasons, or drag the sky to turn it.
How it knows.
The turning points, to the minute
The equinoxes and solstices are the instants the sun’s apparent longitude reaches 0°, 90°, 180° and 270°, worked out by Meeus’s method and read in this place’s clock, its clock changes included. The method is good to about a minute across this century.
Two conventions, both named
The calendar seasons are not Sol’s to define, so the page cites the body that describes them, and names the local one first: the Bureau of Meteorology, the Met Office and the National Weather Service. The hemisphere decides the names, and neither convention is a forecast of the weather.
Day length
Sunrise to sunset, the sun’s upper edge on the horizon, for every day of the year at this place, by the engine the daylight pages use. The longest and shortest days are read from that table, which is why they can fall a day from the solstice. Each city’s year is published beside its page as JSON, CC BY 4.0.
The next turning point, elsewhere.
New Yorkwinter · 21 Dec 3:50 PM Londonwinter · 21 Dec 8:50 PM Melbournesummer · 22 Dec 7:50 AM Los Angeleswinter · 21 Dec 12:50 PM San Franciscowinter · 21 Dec 12:50 PM Seattlewinter · 21 Dec 12:50 PM Denverwinter · 21 Dec 1:50 PM Chicagowinter · 21 Dec 2:50 PM Dallaswinter · 21 Dec 2:50 PM Houstonwinter · 21 Dec 2:50 PM Atlantawinter · 21 Dec 3:50 PM Washington, DCwinter · 21 Dec 3:50 PM Philadelphiawinter · 21 Dec 3:50 PM Bostonwinter · 21 Dec 3:50 PM Miamiwinter · 21 Dec 3:50 PM Edinburghwinter · 21 Dec 8:50 PM Sydneysummer · 22 Dec 7:50 AM Brisbanesummer · 22 Dec 6:50 AM Perthsummer · 22 Dec 4:50 AMA year of light.
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