The year 2012 is Leap Year. As a result, this month, February has 29 days and it only happens once in 4 years. Tahun Kabisat is called Leap Year in English because it is unusual to have 29 days in Feb. The regular number of day in February is 28. So, use this day in a very wise way and make great thing today since you may only meet this day again in 2016.
Happy celebrating the Day!