../ dmsp_15_ephemeris_20210126.txt 22-Jun-2023 00:46 107997 dmsp_16_ephemeris_20210126.txt 22-Jun-2023 00:46 108075 dmsp_17_ephemeris_20210126.txt 22-Jun-2023 00:46 107945 dmsp_18_ephemeris_20210126.txt 22-Jun-2023 00:46 107997