example (eDIT).xlsx

for 1 year
=edate(cell's name,12)<today() -> r
=edate(cell's name,11)<=today() -> y
=edate(cell's name,9)<=today() -> o
=edate(cell's name,6)<=today() -> g

for 2 year
=edate(cell's name,24)<today() -> r
=edate(cell's name,23)<=today() -> y
=edate(cell's name,21)<=today() -> o
=edate(cell's name,18)<=today() -> g

for 3 year
=edate(cell's name,36)<today() -> r
=edate(cell's name,35)<=today() -> y
=edate(cell's name,33)<=today() -> o
=edate(cell's name,30)<=today() -> g