../ dmsp_15_ephemeris_20220903.txt 22-Jun-2023 00:52 109659 dmsp_16_ephemeris_20220903.txt 22-Jun-2023 00:52 109667 dmsp_17_ephemeris_20220903.txt 22-Jun-2023 00:52 109691 dmsp_18_ephemeris_20220903.txt 22-Jun-2023 00:52 109515