Coordinated Universal Time Utc

Leap seconds don't make any difference to the lives of the people, they can cause problems for a range of systems that require an exact time.

NASA missions, including the Solar Dynamics Observatory (SDO) which watches the Sun, will join timekeepers around the world to add a leap second to its clocks, just before midnight on New Year's Eve.

To avoid solar time and TAI moving too far apart, Coordinated Universal Time (UTC) is adjusted to give us the odd 86,401 second day.

Leap seconds don't make any difference to the lives of the people, they can cause problems for a range of systems that require an exact time.

NASA missions, including the Solar Dynamics Observatory (SDO) which watches the Sun, will join timekeepers around the world to add a leap second to its clocks, just before midnight on New Year's Eve.

To avoid solar time and TAI moving too far apart, Coordinated Universal Time (UTC) is adjusted to give us the odd 86,401 second day.