Day 13 Early Timekeeping Before the invention of clocks people marked the time of day using the sun Many used a sundial to tell what time it was The sun is not at the same place in the sky at various locations around the world at the same time so a sundial was not really practical ID: 351657
Download Presentation The PPT/PDF document "Time Zone Maps" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
