What is negative leap seconds, In 2020, humanity had the shortest day on record, The world now turns unusually faster, The first leap second occurred on June 30, 1972.
Officials are discussing whether to delete one second from 24 hours, taking this change into account.
It was announced that the resulting leap day lasted 0.5 seconds on average less than 24 hours.
What is negative leap seconds
Negative leap seconds means erasing seconds. 27 ‘leap seconds’ had been added since the 1970s to keep the atomic clock in line with the solar time.
Since the 1960s, atomic clocks have been keeping ultra-fragile records of day length. It showed that in the last 50 years, Earth has completed a revolution around itself in less than 24 hours, 86,400 seconds.
On 19 July 2020, the day was 1.4602 milliseconds shorter than a full 24 hours. This was the shortest day since records began to be kept in the 1960s.
The shortest day before 2020 occurred in 2005, only this top rank was broken 28 times in the past 12 months surprisingly.
The tides in the oceans are also among the factors that make up the leap second. Leap seconds has been implemented since 1999 due to a total delay of 0.9 seconds in the rotational time of the earth. The first leap second occurred on June 30, 1972.