../ dmsp_15_ephemeris_20200419.txt 22-Jun-2023 00:43 109589 dmsp_16_ephemeris_20200419.txt 22-Jun-2023 00:43 109544 dmsp_17_ephemeris_20200419.txt 22-Jun-2023 00:43 109709 dmsp_18_ephemeris_20200419.txt 22-Jun-2023 00:43 109582