Computer Ephemeris for 2020 from DE200/LE200.

Longitude of central meridian of Neptune.

                                System 3
 Date    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
    1  352.0   55.6  127.0  191.6   81.0  147.5   38.3  105.7  172.9   63.0  128.4   16.5
    2  168.3  231.8  303.2    7.9  257.3  323.8  214.7  282.1  349.2  239.3  304.7  192.8
    3  344.5   48.1  119.5  184.2   73.6  140.2   31.0   98.4  165.6   55.6  121.0    9.1
    4  160.7  224.3  295.8    0.5  249.9  316.5  207.4  274.8  341.9  231.9  297.3  185.3
    5  337.0   40.6  112.0  176.8   66.3  132.9   23.8   91.2  158.3   48.2  113.5    1.6
    6  153.2  216.8  288.3  353.1  242.6  309.2  200.1  267.5  334.6  224.6  289.8  177.8
    7  329.5   33.1  104.6  169.4   58.9  125.6   16.5   83.9  151.0   40.9  106.1  354.1
    8  145.7  209.3  280.8  345.7  235.3  302.0  192.9  260.3  327.3  217.2  282.4  170.3
    9  322.0   25.6   97.1  162.0   51.6  118.3    9.2   76.6  143.6   33.5   98.7  346.6
   10  138.2  201.8  273.4  338.3  227.9  294.7  185.6  253.0  320.0  209.8  274.9  162.8
   11  314.4   18.1   89.7  154.6   44.3  111.0    2.0   69.4  136.3   26.1   91.2  339.1
   12  130.7  194.3  265.9  330.9  220.6  287.4  178.3  245.7  312.7  202.4  267.5  155.4
   13  306.9   10.6   82.2  147.3   36.9  103.7  354.7   62.1  129.0   18.7   83.8  331.6
   14  123.2  186.8  258.5  323.6  213.3  280.1  171.1  238.4  305.3  195.1  260.0  147.9
   15  299.4    3.1   74.8  139.9   29.6   96.5  347.4   54.8  121.7   11.4   76.3  324.1
   16  115.6  179.3  251.0  316.2  205.9  272.8  163.8  231.2  298.0  187.7  252.6  140.4
   17  291.9  355.6   67.3  132.5   22.3   89.2  340.2   47.5  114.4    4.0   68.9  316.6
   18  108.1  171.8  243.6  308.8  198.6  265.5  156.6  223.9  290.7  180.3  245.1  132.8
   19  284.4  348.1   59.9  125.1   15.0   81.9  332.9   40.2  107.0  356.6   61.4  309.1
   20  100.6  164.4  236.2  301.4  191.3  258.3  149.3  216.6  283.4  172.9  237.7  125.3
   21  276.9  340.6   52.5  117.7    7.6   74.6  325.7   33.0   99.7  349.2   53.9  301.6
   22   93.1  156.9  228.7  294.1  184.0  251.0  142.0  209.3  276.0  165.5  230.2  117.8
   23  269.4  333.1   45.0  110.4    0.3   67.4  318.4   25.7   92.4  341.8   46.5  294.1
   24   85.6  149.4  221.3  286.7  176.7  243.7  134.8  202.0  268.7  158.1  222.7  110.3
   25  261.8  325.6   37.6  103.0  353.0   60.1  311.1   18.4   85.0  334.4   39.0  286.6
   26   78.1  141.9  213.9  279.3  169.4  236.5  127.5  194.7  261.3  150.7  215.2  102.8
   27  254.3  318.2   30.2   95.7  345.7   52.8  303.9   11.1   77.7  326.9   31.5  279.1
   28   70.6  134.4  206.5  272.0  162.1  229.2  120.2  187.5  254.0  143.2  207.8   95.3
   29  246.8  310.7   22.8   88.3  338.4   45.6  296.6    3.8   70.3  319.5   24.0  271.6
   30   63.1         199.1  264.6  154.8  221.9  113.0  180.2  246.6  135.8  200.3   87.8
   31  239.3          15.3         331.1         289.3  356.5         312.1         264.0