Leap years can be a bit tricky! They occur every 4 years to help synchronize our calendar with the Earth's orbit around the Sun. However, there's a catch: years divisible by 100 are not leap years, unless they can be divided by 400. So, 2000 was a leap year, but 2100 won't be. Have you ever had a significant event land on a leap day, or wondered more about how it all works? I'd love to hear your thoughts!