../ dmsp_15_ephemeris_20120817.txt 22-Jun-2023 00:20 109537 dmsp_16_ephemeris_20120817.txt 22-Jun-2023 00:20 109703 dmsp_17_ephemeris_20120817.txt 22-Jun-2023 00:20 109662 dmsp_18_ephemeris_20120817.txt 22-Jun-2023 00:20 109685