.AT 17 moments and 40 seconds past eight at night, Greenwich Method Time, on July 20th it will certainly be actually exactly 55 years since Neil Armstrong landed on the Moon. Those 55 years amount to 20,089 times. Of those, 20,062 were actually 86,400 seconds long and 27 one 2nd longer with the help of the add-on of leap seconds, a practice begun in 1972. So those 55 years are going to add up to 1,735,689,627 secs.