This Demonstration shows the hours of daylight for a given latitude and the night and daylight halves of the globe for a given date and time.
THINGS TO TRY
Rotate and Zoom in 3D
The hours of daylight are are calculated as the center of the sun's disk passes the horizon and its altitude is zero.
Snapshot 1: always 12 hours of daylight at the Equator
Snapshot 2: up to 24 hours of daylight above the Arctic Circle
Snapshot 3: some days, 0 hours of daylight below the Antarctic Circle
The world map is a resized version of the one developed by the NOAA. 
 "Marine Geology & Geophysics."
National Geophysical Data Center
. (Jun 21, 2011).
Mean Solar Time
Wolfram Demonstrations Project
Published: January 23, 2012
Embed Interactive Demonstration
More details »
Download Demonstration as CDF »
Download Author Code »
More by Author
Solar Position Chart in Cartesian Coordinates
Solar Position Chart in Polar Coordinates
Solar Time Calculator
Ed Pegg Jr
Sale Price Calculator
Auto Loan Calculator
Igor C. Antonio
Browse all topics
The #1 tool for creating Demonstrations
and anything technical.
Explore anything with the first
computational knowledge engine.
The web's most extensive
Course Assistant Apps »
An app for every course—
right in the palm of your hand.
Wolfram Blog »
Read our views on math,
science, and technology.
Computable Document Format »
The format that makes Demonstrations
(and any information) easy to share and
STEM Initiative »
Programs & resources for
educators, schools & students.
Join the initiative for modernizing
Step-by-step Solutions »
Walk through homework problems one step at a time, with hints to help along the way.
Wolfram Problem Generator »
Unlimited random practice problems and answers with built-in Step-by-step solutions. Practice online or make a printable study sheet.
Wolfram Language »
Knowledge-based programming for everyone.
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.
© 2016 Wolfram Demonstrations Project & Contributors |
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to
Mathematica Player 7EX
I already have