IRIS Supported Software » libmseed

Download: https://seiscode.iris.washington.edu/projects/libmseed/files

Change since 2.16m:

        - Round Fixed Section Data Header start time values to the nearest
        tenth of millisecond and restrict the microsecond offset value
        to a range between -50 and +49 as recommended in SEED.  Previously
        start times were truncated at tenths of millisecond resolution
        and the microsecond offset value was between 0 and +99.  This also
        addresses a bug where microsecond offsets were off by 100ms for times
        before Jan 1 1970.  Thanks to Lion Krischer for reporting.