../ dmsp_15_ephemeris_20180527.txt 22-Jun-2023 16:28 109514 dmsp_16_ephemeris_20180527.txt 22-Jun-2023 16:28 109631 dmsp_17_ephemeris_20180527.txt 22-Jun-2023 16:28 109677 dmsp_18_ephemeris_20180527.txt 22-Jun-2023 16:28 109518