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GUIDE TO ARCTIC SUNRISE AND SUNSET
Tables of daily sunrise and sunset durations in the Arctic. Learn about the "land of the midnight sun", solstices, equinoxes, twilight and MORE!
ARCTIC LIBRARY
Check out the SKY & SEASONS section. There's just about everything in this library that you'd ever need to know about the Arctic, listed both ALPHABETICALLY and by CATEGORY. Ideal for students. (Double-click any word on these pages for a "pop-up" definition.)
UNITED STATES NAVAL OBSERVATORY
Daily rise and set times for the Sun and Moon. Use Form A for cities or towns in the U.S. or Form B for all other locations.
WORLDTIME INTERACTIVE WORLD ATLAS
See how the Sun is hitting the Earth. Sunrise and sunset times
in several hundred cities, and a database of public holidays
worldwide.
INCOMING SOLAR RADIATION
Three atmospheric processes modify the solar radiation passing through our atmosphere destined to the Earth's surface - scattering, absorption and reflection.
SOLSTICE
A time of magic. What it is, ancient solstice architecture, winter solstice in many cultures, in song
THE SUNTRACKER
This web site lets you see where the Sun is in the sky at any time of day, anywhere in the
world. Just click on a date, choose a place and click the button. There's lots of additional information about seasons and sundials too.
EQUINOX
Does each equinox happen at the same place in space every year?
PRECISE TIMES OF EQUINOXES AND SOLSTICES
A table of the exact day, hour and minute of Earth's equinoxes, solstices, perihelion (closest point to the sun), and aphelion (farthest point from the sun) from 1992-2005.
HERE COMES THE SUN
If you've ever wanted to know why the sun is never directly overhead at noon at higher latitudes,
or why all the ice at the North Pole doesn't melt during the Summer Solstice, or even what a solstice is,
you've just found the right place!
THE EARTH, SUN AND MOON
Earth, which is our base from which we look into space, is constantly moving. Understanding this movement is one of the most useful and important things in astronomy.
WHY DAY IS LONGER THAN NIGHT AT THE EQUINOX
Often you hear that day and night are equal length on the spring and fall equinox, but that's not the case.
SUNRISE-SUNSET CALCULATION
Did you know that when you see the sun rise or set, it is actually below the local horizon? This is because sunlight
bends or refracts as it enters the earth's atmosphere.
SUNRISE, SUNSET, DAWN AND DUSK TIMES
The Gaisma (Latvian word for "light") web site provides sunrise, sunset, dawn and dusk times for thousands of locations all over the world. Sun data is shown in table format for selected dates and as a graph for the whole year.
VIRTUAL REALITY MOON PHASE PICTURES
These "Virtual Reality Moon Phases" were created by R. Schmidt from ray-traced images of the Moon.
You can view the phase of the Moon for any date and time [1800-2199 A.D].
MOON PHASES
A display of the moon's current phase and estimate of the time of the next full moon.
ATHROPOLIS GLOSSARY (Athropolis)
See our pop-up boxes for: SOLSTICE and EQUINOX.
