THE DIFFERENT ANSWERS ARE SEPARATED BY A LINE OF STARS Our older clock uses the 1ds accuracy value, but our later clocks actually use a more accurate on-line version of DUT1 that is, at least expressed, with an accuracy of 1ms. *************************************************************************** If higher accuracy is needed UT1R-UTC can be taken from Bull. B *************************************************************************** No opiniosn *************************************************************************** In my case, we don't need nor use DUT1 in our laboratory. *************************************************************************** More accuracy would be preferable. *************************************************************************** I do not use it *************************************************************************** Bulletin D has no significant impact to navigation for us. *************************************************************************** I do not receive nor do I make use of use Bulletin D. ***************************************************************************