../ dmsp_15_ephemeris_20190622.txt 22-Jun-2023 00:41 109420 dmsp_16_ephemeris_20190622.txt 22-Jun-2023 00:41 109415 dmsp_17_ephemeris_20190622.txt 22-Jun-2023 00:41 109751 dmsp_18_ephemeris_20190622.txt 22-Jun-2023 00:41 109497