../ dmsp_15_ephemeris_20190723.txt 22-Jun-2023 00:41 109457 dmsp_16_ephemeris_20190723.txt 22-Jun-2023 00:41 109622 dmsp_17_ephemeris_20190723.txt 22-Jun-2023 00:41 109700 dmsp_18_ephemeris_20190723.txt 22-Jun-2023 00:41 109559