../ dmsp_15_ephemeris_20120713.txt 22-Jun-2023 16:13 109483 dmsp_16_ephemeris_20120713.txt 22-Jun-2023 16:13 109708 dmsp_17_ephemeris_20120713.txt 22-Jun-2023 16:13 109667 dmsp_18_ephemeris_20120713.txt 22-Jun-2023 16:13 109698