December has a slew of events to be excited about -- as well as terrified of. Aside from Christmas and the popular doomsday myth of the end of the world on Dec. 21, 2012, numerologists and many alike have been looking forward to 12-12-12. Dec. 12, 2012 will be the last time the month, day and year are the same number in the Gregorian or Christian calendars for the next century until Jan. 1, 2101 (01-01-01). For most people, 12-12-12 presents the last time in their lifetimes to celebrate a day when the numbers align.

So how do people celebrate? In New York City's Times Square, children celebrating their 12th birthday born on Dec. 12 gathered to blow out the candles on a giant birthday cake baring 12-12-12.

In Madrid, street performers gathered with iPad to perform exactly when the time struck 12:12:12 on 12-12-12. All over the world, babies born on the day or parents who scheduled their childbirth for 12-12-12 saw their first rays of limelight as the famous children born on the special date.

Couples all over the world, and of course in the marriage capital of the world Las Vegas, Nev., gathered to wed on the day. According to David's Bridal, a survey indicated a 1,446 percent increase for marriages on Dec. 12 this year as opposed to last year, with more than 7,500 couples slated to marry.

In Tama, Japan, revelers prayed for peace at 12:12:12 at an event called "Light Meeting." Similarly, an organization called Celebrate 12 12 12 is holding a worldwide event for the World Day of Interconnectedness. 

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"Wherever you are, whoever you are, take some time on December 12, 2012 – perhaps at 12:12 or throughout the day – to celebrate the simple yet transformative understanding that we are all interconnected in the living system called Planet Earth," the website reads. "Let us together share one dream, one heart and one intention with an infinite variety of expressions."

Consecutive date sequences have always held value for people throughout the years, who believe the alignment of numbers have a magical or mystical meaning.

In Chinese numerology, 12 is an important number, combining one, which is yang, and two, which is yin. 12 represents the harmony of yin and yang, which symbolizes the masculine energy of the sun and the feminine energy of the moon.

Mathematicians, on the other hand, take a more practical approach to the magic of 12, since its one of the few numbers that can be event divided into subsets.