start-time

    Absolute time expression of the start time in the following
    format:

    dd-mmm-yyyy hh:mm:ss.cc

 end-time

    Absolute time expression of the end time in the following format:

    dd-mmm-yyyy hh:mm:ss.cc

 format

    Format for delta time return value. The keywords are as follows:

    o  ASCTIM: ASCII time format

    o  DCL: DCL delta time format This format can be used as an input
       to other DCL time-related lexicals and commands.