G'morning David,

 -> but these were the 3rd Sunday in March and the 1st in October.
 DW> The interesting thing is that these dates are much more symmetrical,
 DW> compared with the solstices, equinoxes, etc, than the ones we use in
 DW> the Northern Hemisphere. This makes sense, since the Equation of Time
 DW> has a far greater effect in the northern winter than the southern one.

Mmmm ... the letters to Editors here ocassionally feature one 
advocating that clocks be set twice a year by horologists to lose 
or gain time to match teh seasons.

I've not done the comparison, but I feel that a straightline 
zigzig would not fit your `equation of time' at all well;  has 
anybody made any formal comparison, do you know ?

Apogee-chasing clocks shouldn't be a problem in this 
GPS/ipod/cellphone day,  if the local time really needs to fit the 
diurnal cycle....

Miles.
 
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