../ dmsp_15_ephemeris_20170923.txt 22-Jun-2023 00:35 109562 dmsp_16_ephemeris_20170923.txt 22-Jun-2023 00:35 109672 dmsp_17_ephemeris_20170923.txt 22-Jun-2023 00:35 109601 dmsp_18_ephemeris_20170923.txt 22-Jun-2023 00:35 109660