../ dmsp_15_ephemeris_20191109.txt 22-Jun-2023 00:42 109427 dmsp_16_ephemeris_20191109.txt 22-Jun-2023 00:42 109456 dmsp_17_ephemeris_20191109.txt 22-Jun-2023 00:42 109479 dmsp_18_ephemeris_20191109.txt 22-Jun-2023 00:42 109457