NTP Leap Bits

These graphs show the fraction of servers advertising various NTP leap second bits around the times of year that leap seconds can be introduced. In the key of the graph "leap 01" means add a second, "leap 10" means remove a second, "leap 00" means no leap second is yet expected and "leap 11" means the server is currently unsynchronised. The line at the middle of each graph shows the point at which a leap second could be introduced. Note, I have a paper that describes the 2005-2015 results in more detail.

June 2022 Results Awaiting Data
June 2021 Results December 2021 Results
June 2019 Results December 2019 Results
June 2018 Results December 2018 Results
June 2017 Results December 2017 Results
June 2016 Results December 2016 Results
June 2015 Results December 2015 Results
June 2014 Results December 2014 Results
June 2013 Results December 2013 Results
June 2012 Results December 2012 Results
June 2011 Results December 2011 Results
June 2010 Results December 2010 Results
June 2009 Results December 2009 Results
No data for June 2008. December 2008 Results
No data for June 2007. No data for December 2007.
No data for June 2006. No data for December 2006.
No data for June 2005. December 2005 Results
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