Taken from Google
Today marks the 39th year of the celebration of the World Environment Day. This is also a day that stimulates awareness of the environment and enhances political attention and public action. This year's theme is Forests-Nature At Your Service which cover one third of the earth’s land mass, performing vital functions and services around the world which make our planet alive with possibilities.
Since it is not a public holiday, it means that you still need to report to work before and after joining this event.