Comets Kirch and ISON

In 1680, the greatest comet of all mankind was seen in the sky in November...

333 years later

In 2013, the greatest comet of all mankind is seen in the sky in November...

2013
1320+
3333

1680
8016+
9696


6363 is between them
3636+
9999

1980 Regan's UN speech




1980
8019+
9999




2013 - 33 = 1980
1980 - 300 = 1680