../ dmsp_15_ephemeris_20190117.txt 22-Jun-2023 00:39 108037 dmsp_16_ephemeris_20190117.txt 22-Jun-2023 00:39 108041 dmsp_17_ephemeris_20190117.txt 22-Jun-2023 00:39 107962 dmsp_18_ephemeris_20190117.txt 22-Jun-2023 00:39 107866