.AT 17 MINUTES and also 40 few seconds previous eight in the evening, Greenwich Mean Time, on July 20th it will be exactly 55 years since Neil Armstrong landed on the Moon. Those 55 years add up to 20,089 days. Of those, 20,062 were 86,400 few seconds long and also 27 one second longer because of the add-on of jump seconds, a method started in 1972. So those 55 years will add up to 1,735,689,627 few seconds.