There is no Leap Year in 2015, but there would be on February 29, 2016!
According to Time and Date, a Leap Year has 366 days, unlike the usual year that has 365 days. Nearly, every 4 years is Leap Year and we technically add a “Leap Day” (an extra or intercalary day) on February 29.
Julius Caesar introduced Leap Years in the Roman empire over 2000 years ago, but the Julian calendar had only one rule: any year evenly divisible by 4 would be a leap year. This led a way of too many leap years, but didn’t get corrected until the introduction of the Gregorian Calendar over 1500 years later.
So, since the previous leap year was 2012, the next leap year will be in 2016,followed by 2020, 2024 and so forth.
Leap Years are needed to keep our modern day (Gregorian Calendar) in alignment with the Earth’s revolutions around the sun. It takes the Earth approximately 365.242199 days – or 365 days, 5 hours, 48 minutes, and 46 seconds – to circle once around the Sun. This is called a tropical year.
However, the Gregorian calendar has only 365 days in a year, so if we didn’t add a day on February 29 nearly every 4 years, we would lose almost six hours off our calendar every year. After only 100 years, our calendar would be off by approximately 24 days!
Leap years, on the other hand, are considered BAD LUCK, if you are going to marry during this year. Yet, up until now, the evidence behind this “negative omen information” remains a mystery.