../ dmsp_15_ephemeris_20190812.txt 22-Jun-2023 00:41 109543 dmsp_16_ephemeris_20190812.txt 22-Jun-2023 00:41 109594 dmsp_17_ephemeris_20190812.txt 22-Jun-2023 00:41 109603 dmsp_18_ephemeris_20190812.txt 22-Jun-2023 00:41 109591