A poem by Hedgie, (June 18th) sent me off thinking (like a coffee percolator - it takes me a while).
I always thought that Midsummer's day was the same as the longest day of the year, which in the Northern Hemisphere is today: unlike the Southern Hemisphere (hi CB) who enjoy the shortest day of midwinter (do you guys enjoy some sort of feast to break things up?).
I digress - St John's Eve - is the evening before Midsummer's day and according to research is the 23rd of June.
Confused yet? It doesn't take much with me.
The other thing is that it reminds me of The Eve of St Agnes, by Keats which again according to research is 21st January. Almost but not quite the opposite end of the calendar spectrum and the female to the male, the yin to the yang etcetera, etcetera!
So anyway, today is just the longest day of the year in the Northern Hemisphere - not Midsummer's day.
So don't go visiting any weird hills, gyrating and celebrating just yet!