.AT 17 mins and 40 secs previous eight at night, Greenwich Method Time, on July 20th it will certainly be precisely 55 years given that Neil Armstrong landed on the Moon. Those 55 years amount to 20,089 days. Of those, 20,062 were actually 86,400 secs long and also 27 one 2nd longer due to the addition of leap few seconds, a practice begun in 1972. So those 55 years will definitely add up to 1,735,689,627 secs.