In article , Mark
writes
Look everyone...we need to clear up one or two points here.

(1) 21st June is the Summer Solstice, which to most people is traditionally
called Midsummers Day or the 'Start of Summer' (which I think is weird, but
hey...). It is the longest day of the yesr for the northern hemisphere, and
is determined by the Earth's orbital inclination, or tilt, of 23.5 degrees.

I don't believe that is strictly true. It's like saying the sun always
rises in the east.

(2) Any other traditional dates mean very little other just dates, as the
calendar has changed so many times since these traditions began.

exactly, so why 21 June? Actually, I don't really see the point in
arguing
about it. We're never going to agree and unless you are a druid, it
doesn't really matter. (unless of course, the 24th is your birthday).
Have a look on Google and you will see the various opinions.
--
June Hughes