../ dmsp_15_ephemeris_20171116.txt 22-Jun-2023 00:35 109474 dmsp_16_ephemeris_20171116.txt 22-Jun-2023 00:35 109499 dmsp_17_ephemeris_20171116.txt 22-Jun-2023 00:35 109419 dmsp_18_ephemeris_20171116.txt 22-Jun-2023 00:35 109272