2016 takes a leap…a leap second

As if 2016 weren’t bad enough…this year is going to be slightly longer than normal. New Year’s Eve will be one second longer in 2016 to adjust for the shifting rotation of the Earth.

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leap second is a one-second adjustment that is sometimes applied to Coordinated Universal Time (UTC) in order to keep its time of day close to the mean solar time, or UT1.

This leap second has the potential to cause chaos for IT systems that cannot deal with a 61-second minute. Websites such as Reddit, Yelp, LinkedIn have previously experienced outages for a period of time due to the leap second in 2012.

Most VMware products are unaffected by this time change that will occur this weekend However, some products are affected. Please see KB 2147498 for more information.

For those VMware products affected, the common work-around is to enabled Slew Mode for NTP. For more information see KB 2121016.