../ dmsp_15_ephemeris_20190703.txt 22-Jun-2023 00:41 109549 dmsp_16_ephemeris_20190703.txt 22-Jun-2023 00:41 109553 dmsp_17_ephemeris_20190703.txt 22-Jun-2023 00:41 109697 dmsp_18_ephemeris_20190703.txt 22-Jun-2023 00:41 109561