../ dmsp_15_ephemeris_20200820.txt 22-Jun-2023 16:33 109622 dmsp_16_ephemeris_20200820.txt 22-Jun-2023 16:33 109579 dmsp_17_ephemeris_20200820.txt 22-Jun-2023 16:33 109692 dmsp_18_ephemeris_20200820.txt 22-Jun-2023 16:33 109530