In order for there to be 5 Mondays in February, two things must happen. First, it must be a leap year. Second, February 1st must fall on a Monday, so that the remaining four Mondays will fall on the 8th, 15th, 22nd and 29th. It happens once every 28 years. So, we had 5 Mondays in February in 1988. We will face the phenomenon again in 2044. This year we also have 5 Mondays in February. You are welcome to check this out on your own: