The day of the Earth (eng. Earth Day) - the name used in relation to a wide range of events, conducted in the spring and was designed to encourage people to be attentive to the fragile and sensitive environment on planet Earth. Earth day is a civil initiative, it is open for accession by any individuals, groups and organizations. There are two main period of the Days of the Earth: in March (near the vernal equinox) and 22 April. Initially, Earth Day is celebrated in many countries in the day of the vernal equinox to mark the moment when the spring begins