../ dmsp_15_ephemeris_20180212.txt 22-Jun-2023 16:51 108108 dmsp_16_ephemeris_20180212.txt 22-Jun-2023 16:51 108126 dmsp_17_ephemeris_20180212.txt 22-Jun-2023 16:51 108026 dmsp_18_ephemeris_20180212.txt 22-Jun-2023 16:51 108124