../ dmsp_15_ephemeris_20200816.txt 22-Jun-2023 00:44 109593 dmsp_16_ephemeris_20200816.txt 22-Jun-2023 00:44 109626 dmsp_17_ephemeris_20200816.txt 22-Jun-2023 00:44 109634 dmsp_18_ephemeris_20200816.txt 22-Jun-2023 00:44 109628