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Leap Second

To set a leap second, navigate to Select > [Select Scenario] > Configure [selected scenario]: View 2/3 > LS:.

Leap second configuration

The leap second field can be set to -1, 0 or 1, and indicates a future change in the leap second value. While the ΔtLS is set automatically based on information in the used ephemeris data, the value given in the leap second field will impact values related to LSF (Leap Seconds Future).


Note that downloaded and default navigation data files do not contain any LSF information (RINEX v2.1). Therefore it is still necessary to set the LSF when a leap second change will occur, in order to ensure correct behavior. The default UTC/GPS offset currently is set to 17 seconds (see Options > Interface and reference: Network > Network configuration: NTP server).