.AT 17 MINUTES and also 40 seconds past eight at night, Greenwich Mean Time, on July 20th it will be specifically 55 years given that Neil Armstrong arrived on the Moon. Those 55 years add up to 20,089 days. Of those, 20,062 were actually 86,400 secs long as well as 27 one 2nd longer due to the add-on of jump few seconds, a technique begun in 1972. So those 55 years will amount to 1,735,689,627 seconds.