The EarthDial Project • FCPS/NOVAC EarthDial
TJHSST Planetarium, Fairfax County, VA
38° 49' N latitude, 77° 12' W longitude

Time-Lapse Animation

A time-lapse animation (shown above) of 26 images spanning 250 minutes (4 hr-10 min), archived from 01 February 2004. The first frame is time-stamped 07:28; the last frame 11:38. The frame delay is set for 20/100 sec (2/10 sec). See a small-size version of this animation: 160x120 pixels (~370 KB).

As you watch the animation, consider the following question: Why is "clockwise" clockwise? After you think of an answer, check to see if you are clock-wise.