Should be fairly easy to work out Ian. The summer solstice used to be when the sun was in Cancer (northern hemispher speaking). It is no longer in cancer. What constellation is it in. Gemini or Leo?
You could do the same thing with the equinoxes. It used to be in Aries whereas now it is in Pisces I believer. So by that reaconing summer should be getting ealier.
Interesting exercise but in fact it doesn't matter as far as clocks and calendars are concerned, because we (well the powers that be) add a second (a leap second) every few years to the year (after summer) which pushes the next summer back a bit.
So if you want to estimate it by the stars it's getting earlier. But if you want to estimate it by clock it stays the same because of added seconds.
At least that's my story and I'm sticking to it.
