../ dmsp_15_ephemeris_20171004.txt 22-Jun-2023 00:35 109664 dmsp_16_ephemeris_20171004.txt 22-Jun-2023 00:35 109629 dmsp_17_ephemeris_20171004.txt 22-Jun-2023 00:35 109726 dmsp_18_ephemeris_20171004.txt 22-Jun-2023 00:35 109618