In the late 1960s German radio station DCF77 did not broadcast time signals 24 hours a day. Different agencies controlled different signals at different times of day.
Deutsches Hydrographisches Institut broadcast signals based on old UTC using their measurements of UT2 and the BIH offsets. PTB broadcast signals of stepped atomic time based on cesium seconds that became the SI second. On Wed 2020-02-05T17:59:31+0000 Michael Deckers hath writ: >The law on legal units in West Germany, from 1969-07-02, lists under >the title "tasks of the Physikalisch-Technische Bundesanstalt" >that the PTB has to publicize the procedures by which units without >material prototype are realized, including the units of time and >time scales, as well as the temperature unit and temperature scales. > hat die Verfahren bekanntzumachen, nach denen nicht verkörperte > Einheiten, einschließlich der Zeiteinheiten und der Zeitskalen > sowie der Temperatureinheit und Temperaturskalen, dargestellt > werden,") >This can be taken to imply the task to disseminate a standard >frequency (which they already did). But in my opinion it does not >imply that UTC must have the same rate as the atomic time scales >at the time -- the law even allows for several time scales. What this means is that DHI was out of the legal time business, and only PTB got to say what legal time was in Germany. The head of PTB said only SI seconds. -- Steve Allen <s...@ucolick.org> WGS-84 (GPS) UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat +36.99855 1156 High Street Voice: +1 831 459 3046 Lng -122.06015 Santa Cruz, CA 95064 https://www.ucolick.org/~sla/ Hgt +250 m _______________________________________________ LEAPSECS mailing list LEAPSECS@leapsecond.com https://pairlist6.pair.net/mailman/listinfo/leapsecs