Happy Midsummer's Day.

A very cheery, yellow flowered weed currently blooming in Vinoland is perforate St. John's wort (Hypericum perforatum) a flowering shrub native to northern Europe and thus named because it can be found flowering on the feast day of St. John the Baptist, which is today. 
The longest day of the year in the northern hemisphere, falls on June 21st (or thereabouts, depending on GMT) and is the occurrence of the summer solstice, whilst Midsummer's day is traditionally observed on the 24th of June.  (The discrepancy in the date is said to have been exacerbated by variations in the Julian Calendar, only to be further confused by the Gregorian Calendar. Oh, those wacky Romans and Popes.)  The two days are often confused; as are the somewhat dubious medicinal benefits attributed to St. John's wort.  Methinks just looking at this sunny yellow flower would promote a positive mood in the biggest of whingers.
Have a dreamy Midsummer's day, and night, everyone.