Late 4th-Early 3rd B.C.
Second half of 4th B.C.
4th A.D.
Second half of 3rd A.D.
2nd-1st B.C.
6 Aug 1971
6th B.C.
Middle of 3rd A.D.
3rd A.D.
1st B.C.-1st A.D.
3rd B.C.
Classical
480 B.C.
First quarter of 5th B.C.
500-480 B.C.
Fourth quarter of 6th B.C.
Third-Fourth quarter of 6th B.C.