../ dmsp_15_ephemeris_20200617.txt 22-Jun-2023 16:33 109638 dmsp_16_ephemeris_20200617.txt 22-Jun-2023 16:33 109629 dmsp_17_ephemeris_20200617.txt 22-Jun-2023 16:33 109505 dmsp_18_ephemeris_20200617.txt 22-Jun-2023 16:33 109483