../ dmsp_15_ephemeris_20120212.txt 22-Jun-2023 00:19 108139 dmsp_16_ephemeris_20120212.txt 22-Jun-2023 00:19 107925 dmsp_17_ephemeris_20120212.txt 22-Jun-2023 00:19 108035 dmsp_18_ephemeris_20120212.txt 22-Jun-2023 00:19 108126