Some NTP servers are configured to do precisely that, in order to avoid the problem entirely in systems where leap seconds might be problematic. For example, A

Some NTP servers are configured to do precisely that, in order to avoid the problem entirely in systems where leap seconds might be problematic. For example, AWS does this for their management console: https://aws.amazon.com/blogs/aws/look-before-you-leap-the-coming-leap-second-and-aws/ https://aws.amazon.com/blogs/aws/look-before-you-leap-the-co... Google also does something similar: http://googleblog.blogspot.com/2011/09/time-technology-and-leaping-seconds.html http://googleblog.blogspot.com/2011/09/time-technology-and-l...