../ dmsp_15_ephemeris_20180114.txt 22-Jun-2023 00:36 108033 dmsp_16_ephemeris_20180114.txt 22-Jun-2023 00:36 107959 dmsp_17_ephemeris_20180114.txt 22-Jun-2023 00:36 107844 dmsp_18_ephemeris_20180114.txt 22-Jun-2023 00:36 107852