../ dmsp_15_ephemeris_20200621.txt 22-Jun-2023 00:44 109471 dmsp_16_ephemeris_20200621.txt 22-Jun-2023 00:44 109549 dmsp_17_ephemeris_20200621.txt 22-Jun-2023 00:44 109492 dmsp_18_ephemeris_20200621.txt 22-Jun-2023 00:44 109503