Challenge

Solve This Riddle.
I Am The First On Earth,
The Second In Heaven
I Appear Two Times In A Week,
You Can Only See Me Once In A Year,
Although I Am In The Middle Of The Sea,
I Am Not In Month,
But,
I AM IN February, June, September, October,
November And December.
What Am I ? Who Am I ?

Solve It If You Are A Genius !!! !!!


Answer Is "E"