../ dmsp_15_ephemeris_20191011.txt 22-Jun-2023 16:57 109601 dmsp_16_ephemeris_20191011.txt 22-Jun-2023 16:57 109596 dmsp_17_ephemeris_20191011.txt 22-Jun-2023 16:57 109690 dmsp_18_ephemeris_20191011.txt 22-Jun-2023 16:57 109536