U.S. law and practice. Worldwide time change dates. Pre plan your sleep requirements. Site is a front-end to U.S. government atomic clocks. Displays the current time in user selected time zones.
Horology is the science of time, timekeeping and timekeepers.
This site is an organized collection of links to about 3000 links to horological websites globally. Includes history and technology of clocks and watches, related museums, organisations, journals, libraries, schools etc. The Institute for the Study of Interdisciplinary Sciences publishes this journal dealing with issues of chronology with respect to ancient history. A response to a VMS problem report giving a detailed explanation of why 2000 is a leap year. Proposes a new Internet-wide timekeeping system based on subdivisions of 360.