../ dmsp_15_ephemeris_20200822.txt 22-Jun-2023 00:44 109555 dmsp_16_ephemeris_20200822.txt 22-Jun-2023 00:44 109572 dmsp_17_ephemeris_20200822.txt 22-Jun-2023 00:44 109745 dmsp_18_ephemeris_20200822.txt 22-Jun-2023 00:44 109653