../ dmsp_15_ephemeris_20150521.txt 22-Jun-2023 16:16 109561 dmsp_16_ephemeris_20150521.txt 22-Jun-2023 16:16 109572 dmsp_17_ephemeris_20150521.txt 22-Jun-2023 16:16 109732 dmsp_18_ephemeris_20150521.txt 22-Jun-2023 16:16 109427 dmsp_19_ephemeris_20150521.txt 22-Jun-2023 16:16 109729