.AT 17 mins as well as 40 secs previous 8 at night, Greenwich Method Time, on July 20th it will certainly be exactly 55 years since Neil Armstrong arrived on the Moon. Those 55 years amount to 20,089 days. Of those, 20,062 were actually 86,400 few seconds long and 27 one second longer thanks to the add-on of leap secs, a technique begun in 1972. So those 55 years are going to add up to 1,735,689,627 seconds.