Early origins and historical perspectives of time measurement.
http://www.perseus.tufts.edu/GreekScience/Students/Chris/TIME2.html - New window - Cached - Archive -
Summarizes the history of various calendars developed and used over the centuries.
http://www.skeptics.com.au/journal/calendar.htm - New window - Cached - Archive -
Includes an ecclesiastical calendar and a section on old and new style dating.
http://www.albion.edu/english/calendar/ - New window - Cached - Archive -
Explains the importance of concept of time in the history of mathematics, science and measurement.
http://www-history.mcs.st-andrews.ac.uk/HistTopics/Time_1.html - New window - Cached - Archive -
Time has been studied for thousands of years. Nevertheless, many issues remain to be resolved. This article explores both what is now known about time and what is controversial and unresolved.
http://www.iep.utm.edu/t/time.htm - New window - Cached - Archive -