NBC Nightly News | Why 2015 Will be Longer Than Last Year ... By A Second @nbcnightlynews | Uploaded January 2015 | Updated October 2024, 9 hours ago.
To counter a dip in the Earth’s rotational speed, the International Earth Rotation and Reference Systems Service will add a second to the clock in June.
To counter a dip in the Earth’s rotational speed, the International Earth Rotation and Reference Systems Service will add a second to the clock in June.
