Earth Day was first instituted in the United States on April 22nd 1970 by Senator Gaylord Nelson, Representative Pete McCloskey, and a number of other concerned individuals including one Julian Koenig, a PR Executive. The idea was that every University and School would set aside one day each year exclusively for teaching its students about the Environment. Since its beginnings 45 years ago Earth Day continues to be marked as an unofficial Environmental awareness day.
Why, though, was it held on April 22nd? According to Wikipedia:
Senator Nelson chose the date in order to maximize participation on college campuses for what he conceived as an “environmental teach-in”. He determined the week of April 19–25 was the best bet as it did not fall during exams or spring breaks. Moreover, it did not conflict with religious holidays such as Easter or Passover, and was late enough in spring to have decent weather. More students were likely to be in class, and there would be less competition with other mid-week events—so he chose Wednesday, April 22.
It also happened to be Mr Koenig’s birthday!
However, when Your Humble Blogmaster first heard about this Earth Day business, I did not have access to the historical detail as related above. What I did see, however, was the influence of forces beyond mortal ken at work. Specifically: April 22nd is when the Sun first enters Taurus – the sign of Fixed Earth. So, either Senator Nelson was secretly into astrology as well, or in fact Earth Day is decreed by the stars!