../ dmsp_15_ephemeris_20120713.txt 22-Jun-2023 00:20 109483 dmsp_16_ephemeris_20120713.txt 22-Jun-2023 00:20 109708 dmsp_17_ephemeris_20120713.txt 22-Jun-2023 00:20 109667 dmsp_18_ephemeris_20120713.txt 22-Jun-2023 00:20 109698