On Dec. 31, 2016, official timekeepers around the globe will include a jump second just before midnight Coordinated Universal Time — which relates to 6:59:59 p.m. EST.
NASA missions will likewise need to do the switch, including the Solar Dynamics Observatory, or SDO, which watches the sun day in and day out.
Tickers do this to keep in a state of harmony with Earth's revolution, which progressively backs off after some time. At the point when the dinosaurs meandered Earth, for instance, our globe took just 23 hours to make a total pivot. In space, millisecond precision is critical to seeing how satellites circle.
"SDO moves around 1.9 miles consistently," said Dean Pesnell, the venture researcher for SDO at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "So does each other question in circle close SDO.
We as a whole need to utilize a similar time to ensure our crash shirking projects are exact. So we as a whole add a jump second to the end of 2016, deferring 2017 by one moment."
The jump second is additionally key to ensuring that SDO is in a state of harmony with the Coordinated Universal Time, or UTC, used to mark each of its pictures. SDO has a clock that checks the quantity of seconds since the start of the mission.
To change over that tally to UTC requires knowing exactly what number of jump seconds have been added to Earth-bound tickers since the mission began. At the point when the shuttle needs to give a period in UTC, it calls a product module that thinks about both the mission's second check and the quantity of jump seconds — and afterward gives back a period in UTC.
Take after Knowridge Science Report on Facebook, Twitter and Flipboard.
News source: NASA.
Figure legend: This Knowridge.com picture is credited to NASA/SDO.
NASA missions will likewise need to do the switch, including the Solar Dynamics Observatory, or SDO, which watches the sun day in and day out.
Tickers do this to keep in a state of harmony with Earth's revolution, which progressively backs off after some time. At the point when the dinosaurs meandered Earth, for instance, our globe took just 23 hours to make a total pivot. In space, millisecond precision is critical to seeing how satellites circle.
"SDO moves around 1.9 miles consistently," said Dean Pesnell, the venture researcher for SDO at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "So does each other question in circle close SDO.
We as a whole need to utilize a similar time to ensure our crash shirking projects are exact. So we as a whole add a jump second to the end of 2016, deferring 2017 by one moment."
The jump second is additionally key to ensuring that SDO is in a state of harmony with the Coordinated Universal Time, or UTC, used to mark each of its pictures. SDO has a clock that checks the quantity of seconds since the start of the mission.
To change over that tally to UTC requires knowing exactly what number of jump seconds have been added to Earth-bound tickers since the mission began. At the point when the shuttle needs to give a period in UTC, it calls a product module that thinks about both the mission's second check and the quantity of jump seconds — and afterward gives back a period in UTC.
Take after Knowridge Science Report on Facebook, Twitter and Flipboard.
News source: NASA.
Figure legend: This Knowridge.com picture is credited to NASA/SDO.
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