.AT 17 moments and 40 seconds past 8 in the evening, Greenwich Mean Time, on July 20th it are going to be exactly 55 years given that Neil Armstrong arrived at the Moon. Those 55 years amount to 20,089 times. Of those, 20,062 were actually 86,400 seconds long as well as 27 one second longer because of the enhancement of leap secs, a practice begun in 1972. So those 55 years are going to add up to 1,735,689,627 secs.