upon alternate units of metric time. The difference between metric time and decimal time is that metric time defines units for measuring time interval, as measured with a stopwatch, and decimal time defines the time of day, as measured by a clock. Just as standard time uses the metric time unit of the second as its basis, proposed decimal time scales may use alternative metric units. See also 12-hour clock 24-hour clock Centesimal minute and second of arc Decimal calendar Hexadecimal time List of unusual units of measurement Metric time Stardate Unix time References Notes Sources National Convention of the French Republic (1793) LE CALENDRIER RÉPUBLICAIN Textes officiels Décrets Relatifs à l'établissement de l'Ère Républicaine published by Philippe Chapelin 2002 Sizes, Inc. (2000) decimal time units Last revised 27 February 2004 Herschel, John (1849) Outlines of Astronomy published by Gallica 1995 External links Decimal Time by Kevin Gut - Website that shows the current decimal time and a converter to and from decimal time Metric Clock by Paul Dunning / Shows the current local decimal time Decimal Time Clock & Calendar Time measurement systems Metrication Metrication in France Time Time in astronomy Units of time