Have you ever wondered why certain numbers are considered lucky? For example, the number 7. Most people consider this number to be very good luck, and couples from around the world have chosen 7-7-17 or 7-17-17 as their wedding date this year. In fact July 7th, 2017 is expected to be even more popular because it will be the 10 year anniversary for brides and grooms that got married on 7-7-07. So what’s the story behind lucky number 7?