.AT 17 MINUTES and 40 seconds previous 8 in the evening, Greenwich Method Time, on July 20th it will definitely be precisely 55 years since Neil Armstrong landed on the Moon. Those 55 years amount to 20,089 days. Of those, 20,062 were 86,400 few seconds long as well as 27 one 2nd longer due to the add-on of leap seconds, a technique begun in 1972. So those 55 years will certainly amount to 1,735,689,627 secs.