Inter Gravissimas: If you're into Gregorian History http://ecuvax.cis.ecu.edu/~pymccart/inter-grav.html
The Calendar Reform Page http://ecuvax.cis.ecu.edu/~pymccart/calendar-reform.html
A lighthearted look at Calendars http://www.alaska.net/%7Enorcom/ndr2.html
The Calendar FAQ http://www.pip.dknet.dk/~pip10160/calendar.html
More Calendar Stuff http://www.webhelp.com/calendar.htm
Gregorian Calendar http://es.rice.edu/ES/humsoc/Galileo/Things/gregorian_calendar.html
John Stockton's Miscellany - Critical dates http://www.merlyn.demon.co.uk/miscinfo.htm#CDs
John Stockton's Miscellany http://www.merlyn.demon.co.uk/miscinfo.htm
Zero by Dick Teresi http://www.theatlantic.com/issues/97jul/zero.htm
The World Wide Holiday and Festival Page http://www.smiley.cy.net/bdecie/
South African Public Holidays http://www.smiley.cy.net/bdecie/SouthAfrica.html
Leap Years http://riemann.usno.navy.mil/AA/faq/docs/faq1.html
21st Century and the 3rd Millennium - When will they begin? http://riemann.usno.navy.mil/AA/faq/docs/faq2.html
What is Universal Time? http://tycho.usno.navy.mil/systime.html
Modified Julian Date http://tycho.usno.navy.mil/mjd.html
Leap Seconds http://tycho.usno.navy.mil/leapsec.html
What is the US law on standard time zones? http://tycho.usno.navy.mil/260.html
British Summer Time http://www.ast.cam.ac.uk/pubinfo/leaflets/summer/summer.html
USNO Master Clock via voice announcer http://tycho.usno.navy.mil/voice.html
USNO Master Clock via modem http://tycho.usno.navy.mil/modem_time.html
USNO Master Clock via Internet http://tycho.usno.navy.mil/ntp.html
USNO Master Clock on your home page http://tycho.usno.navy.mil/howclock.html
USNO Clock Demo http://www.ac.wwu.edu/~stephan/clock.html
Origin of the Seven Day Week http://www.ac.wwu.edu/~stephan/Astronomy/7day.html
When was/is the last/next leap second? http://tycho.usno.navy.mil/leap.html
Representation for Calendar Date and ordinal Date for Information Interchange http://www.ansi.org/cgi-bin/catalog2.pl?waisdoc=1&ansicat/TEXT/1340/1=mailserv.ansi.org%3A210;2=/netra/ansi/wais_db/ansicat;3=1558457%201559797%20/netra/ansi/w
Test Assertions for Date and Time Functions http://www.nist.gov/y2k/datetest.htm
Local Times around the World http://www.hilink.com.au/times/
2-Digit or 4-Digit Years? http://www.data-dimensions.com/html/miljnl33.htm
Use and Transport of Time Values http://www.bmrsoftware.com/wpap.html

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