../ dmsp_15_ephemeris_20200405.txt 22-Jun-2023 00:43 108119 dmsp_16_ephemeris_20200405.txt 22-Jun-2023 00:43 108206 dmsp_17_ephemeris_20200405.txt 22-Jun-2023 00:43 108317 dmsp_18_ephemeris_20200405.txt 22-Jun-2023 00:43 108200