../ dmsp_15_ephemeris_20201001.txt 22-Jun-2023 00:45 109619 dmsp_16_ephemeris_20201001.txt 22-Jun-2023 00:45 109650 dmsp_17_ephemeris_20201001.txt 22-Jun-2023 00:45 109426 dmsp_18_ephemeris_20201001.txt 22-Jun-2023 00:45 109543