This New Year's Eve is a "blue moon" the second full moon in a single month. These are rare occasions, hence "once in a blue moon". Of course, the moon itself will not be blue. There will also be a partial lunar eclipse on the 31st (visible in Europe, Africa, Asia, and Australia).

Since it is a partial eclipse, the moon will just brush past the darkest part of the Earth's shadow, never becoming totally immersed. It will, however, be deep enough into the shadow that shading and reddish color should be visible.

We are ending this decade with a full moon and 1819 was the last decade that ended with a full moon. It was also the Panic of 1819...are we in the same sort of cycle?

The Panic of 1819 was the first major financial crisis in the United States, which occurred during the end of the Era of Good Feelings. The new nation faced a depression in the late 1780s (which led directly to the establishment of the dollar and, perhaps indirectly, to the calls for a Constitutional Convention), and another severe economic downturn in the late 1790s following the Panic of 1797. In those earlier crises, however, the primary cause of economic turmoil originated in the broader Atlantic economy. In contrast, the causes of the Panic of 1819 largely originated within the U.S. economy. The resulting crisis caused widespread foreclosures, bank failures, unemployment, and a slump in agriculture and manufacturing. It marked the end of the economic expansion that had followed the War of 1812. However, things would change for the US economy after the Second Bank of the United States was founded in 1816, in response to the spread of bank notes across United States from private banks, due to inflation brought on by the debt following the war.

Thanks to Intriqued