TimeAndSpace.Science
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Earth

Your own sky, worked out for your own town. Sunrise and sunset, tonight's moon and how full it is, and when the tide turns — for more than a thousand cities, on whatever date you pick. Every figure is computed from the real motions rather than looked up in a table.

Sunrise & Sunset

The cities below run north to south. The farther from the equator, the more day length swings with the season — long summer days, short winter ones.

Sun times near meSearch a city
Moon Phase Today
Waxing gibbous 79% illuminated Next full moon in 5 days
Moon times near meSearch a city
Aug 2380% Aug 2487% Aug 2593% Aug 2697% Aug 27100% Aug 28100% Aug 2998% Aug 3094% Aug 3188% Sep 180% Sep 270% Sep 359% Sep 448% Sep 536% Sep 626% Sep 716% Sep 89% Sep 93% Sep 100% Sep 110% Sep 122% Sep 137% Sep 1413% Sep 1520% Sep 1629% Sep 1738% Sep 1847% Sep 1957% Sep 2066% Sep 2175%
Sun, Earth & Moon Simulator

Where the sun and moon are from your town, at any moment.

Educational info → Open the simulator →
Tide Charts
Los Angeles, CA
024ft6a12p6p0.3ft3.8ft3.0ft5.4ft
Today's high & low tides — open the live chart →
Boston, MA
5ft6a12p6p1.7ft7.9ft2.3ft9.2ft
Today's high & low tides — open the live chart →
Seattle, WA
0510ft6a12p6p8.7ft0.5ft10.5ft7.2ft
Today's high & low tides — open the live chart →
Tides near meSearch by city & state
Where it is day right now
Los AngelesMexico CitySão PauloBogotáAnchorageMoscowMadridLagosCairoJohannesburgNairobiKarachiMumbaiBangkokShanghaiSingaporeJakartaAucklandPerthNew YorkLondonTokyoSydney
New York3:07 AM London8:07 AM Tokyo4:07 PM Sydney5:07 PM
World clock → Day/night map →

Start with a question — why don't the planets fall into the sun, and six more. Or jump across: Home · Time · Space · Classroom.

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Ask us anything about the tools, tell us what's broken or confusing, or suggest something we're missing. Every message is read by a person.

If you leave an email we'll reply to questions. We can't promise to build every suggestion, but they directly shape what we work on next.

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Gravity, motion, time and space — one set of rules, seen from different sides: the big questions · the Sun, Earth & Moon · day & night on Earth · the solar system · the planets · gravity & orbits · sunrise & sunset · moon phases · time zones

Built to be taken apart in a classroom, and by anyone else who is curious. Put a simulator on the projector, ask what it should do next, and send us the idea — if we build it, the class is credited on the page. Classroom guide · About this site.