Windows Time gets accuracy improvements and leap second support

Discussion in 'Windows' started by RGiskardR, Jul 20, 2018.

  1. RGiskardR

    RGiskardR Malware Tester Silver Member

    Microsoft plans to integrate improvements in the upcoming Windows 10 version 1809 and Windows Server 2019 operating systems that improve the accuracy of time.

    The upcoming versions of Windows include compliant leap second support, a new time synchronization protocol called Precision Time Protocol (PTP), software timestamping, clock source stability improvements, and traceability support.

    Leap seconds are needed to keep UTC in-sync with mean solar time. Current regulation makes it necessary to adjust the time accordingly but also make sure to maintain accuracy during a leap second.

    Leap seconds get added in a very specific way. A clock runs the seconds from 0 to 59 usually for a total of 60 seconds. Leap seconds add an extra second and this has to be reflected somehow. When a leap second occurs, it is added to the last minute of the UTC day; the clock goes from 0 to 60 which results in a total of 61 seconds being counted at the time.

    Microsoft did even add support for negative leap seconds. While they never occurred before, Windows is prepared for the event that this is going to happen.

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    silversurfer likes this.
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