../ dmsp_15_ephemeris_20210126.txt 22-Jun-2023 17:01 107997 dmsp_16_ephemeris_20210126.txt 22-Jun-2023 17:01 108075 dmsp_17_ephemeris_20210126.txt 22-Jun-2023 17:01 107945 dmsp_18_ephemeris_20210126.txt 22-Jun-2023 17:01 107997