../ dmsp_15_ephemeris_20110120.txt 22-Jun-2023 00:16 107873 dmsp_16_ephemeris_20110120.txt 22-Jun-2023 00:16 107951 dmsp_17_ephemeris_20110120.txt 22-Jun-2023 00:16 107851 dmsp_18_ephemeris_20110120.txt 22-Jun-2023 00:16 107976