2011                 DT= 67.0
--------------------------------------------------------------
  The epoch Т=J2011.5 is the date 2011  July   2.875(JD 2455745.375)
  it corresponds to the Besselian epoch B2011.50152
 
                                     d   h  m
 Beginning of the spring March     20, 23 20.7 UT
    >>            summer June      21, 17 16.5 UT
    >>            autumn September 23,  9 04.6 UT
    >>            winter December  22,  5 30.0 UT

                                     d  h
 The Earth at perihelion January    3 18.5 UT
 The Earth at aphelion   July       4 14.9 UT