.AT 17 MINUTES and 40 seconds past eight in the evening, Greenwich Mean Time, on July 20th it are going to be actually specifically 55 years because Neil Armstrong landed on the Moon. Those 55 years amount to 20,089 days. Of those, 20,062 were actually 86,400 secs long as well as 27 one second longer with the help of the add-on of surge seconds, a method begun in 1972. So those 55 years will add up to 1,735,689,627 seconds.