1970
The first official day of Spring in the entire northern hemisphere is March 22nd. Because of the tilt in the Earth's axis, the first day of spring in the southern hemisphere is September 22nd.
The official name of the first day of summer is the summer solstice. It lands between June 20 and June 22 in the northern half of the Earth and between December 20 and December 23 on the southern half. It is the longest day of the year.
activity coordinator for first Earth Day
D-Day was the first day of "Operation overlord".
SUNDAY
When the Earth first formed, a day was about 6 hours long.
December 21/22 is the official first day of winter
The official date of the First day of Spring in the Southern Hemisphere is September 22nd or 23rd.
December 21 is the official day of winter.
If you are a Christian, then the first day of the earth was Monday
the purpose for earth day is to help save the earth
In Wisconsin