.AT 17 MINUTES and 40 seconds previous 8 in the evening, Greenwich Mean Opportunity, on July 20th it will be specifically 55 years considering that Neil Armstrong came down on the Moon. Those 55 years add up to 20,089 days. Of those, 20,062 were 86,400 seconds long and 27 one 2nd longer thanks to the add-on of leap secs, a strategy started in 1972. So those 55 years will add up to 1,735,689,627 few seconds.