On Thursday 27 March 2008 07:57, Brij Bhushan Vij wrote: > Bill, Pierre: > >Anyone have a better suggestion for a symbol for year? > > I have often used the symbols as: Y & yr for year. But to specify if I > meant ONLY the tropical year or otherwise, it become obvious to qualify as > Y (Year Tropical, Yt) or Ys (Year Sidereal).....etc. The general convention > of reference to Year being a 'tropical year', when only Y is good enough. > BUT, is this a point of debate? Why not leave it alone, with its existing > symbol as: yyyy-mm (or ww)-dd H hr-md-sd; H being the seperation for 'time > of the 'hour, using decimalised minutes & decimal seconds after the hour'.
That isn't a symbol for year, it's a way of writing a date. A symbol for year is needed for such expressions as "this tectonic plate moves five millimeters per year". Pierre
