Web exhibits explains a variety of calendars as well as the seven-day week and more. The ISO 8601 method of writing dates is also with us. As an antidote, check out Steffen Thorsen's old-fashioned calendar information , including calendars for any year, moon phases and major holidays. How Stuff Works explains How Time Works too. The Time Service Department of the U.S. Naval Observatory and the Official U.S. Time .
Horology is the science of time, including clocks, watches and timekeeping.
Goldberg also shares his collections , as does JP Wing , who is passionate about series clocks and master clocks. This Black Forest cuckoo clock site has general clock information as well. How Stuff Works explains the workings of a digital clock , a pendulum clock and a windup alarm clock . You can also find enthusiasts in alt.horology or wandering in clock museums . Gordon Uber provides plenty of links.