There is Sunday of course which was originally and literally Sun’s day as a vaguely religious observance. Now there is Solar Day which is not so much a day set aside to honor solar (power) but a day to show how solar power has grown and can be used. This is to be June 19 and will be an annual day of recognition for the growth of clean, solar energy. The premise of Solar Day is simple: a national day of recognition for solar energy, energy independence and protection of the planet.