http://userwww.service.emory.edu/~lderose/docs/calendar/dispsys.html#MayanHaab

http://userwww.service.emory.edu/~lderose/docs/calendar/listsys.html

http://www.unifr.ch/imr/t5calendars.htm

http://www.sldirectory.com/cal.html

http://www.webcrawler.com/reference/calendars_and_time/other_calendars

Longnow:
http://www.longnow.org/
"The Long Now Foundation is a nonprofit organization that relies completely on private gifts and grants to fund its projects and programs. Every gift is important to us and helps make possible the creation of the 10,000-Year Clock, the formation of a 10,000-Year Library, and the knowledge-sharing work we do.
If you'd like to be part of something ambitious, visionary, and downright monumental, consider joining our growing band of supporters. In return, the Clock-Library project offers you the opportunity, as Stewart Brand says, of being instructed, amused and even inspired..."

Local time
http://www.bdtf.hu/ltime.html

Geburt der Zeit kiallitas
http://www.uni-kassel.de/museum/gdz/gdzindex.html

Horology - The Index (The Science of Timekeeping, Clocks and Watches )
http://www.horology.com/
http://physics.nist.gov/GenInt/Time/time.html

Étienne Jules Marey:
http://www.optonline.com/comptons/ceo/24268_Q.html
http://www.cnam.fr/museum/index.html
http://www.etudes.photographie.com/noteslect/ndl0308.html
http://www.expo-marey.com/

Zenon:
http://www.utm.edu/research/iep/t/time.htm#ZENO
http://www.c3.lanl.gov/mega-math/new/sierpins/zeno.html
http://scidiv.bcc.ctc.edu/Math/Zeno.html
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Zeno_of_Elea.html
http://www.utm.edu/research/iep/z/zenoelea.htm
http://math.truman.edu/~thammond/history/Zeno.html
http://www-groups.dcs.st-and.ac.uk/~history/References/Zeno_of_Elea.html
http://www.kcl.ac.uk/kis/schools/hums/philosophy/october95.html
http://www.lewiscarroll.org/logic.html
http://www.mathacademy.com/cgi-bin/ref_main.cgi?Paradox of the Tortoise and Achilles