../ dmsp_15_ephemeris_20180227.txt 22-Jun-2023 16:51 108149 dmsp_16_ephemeris_20180227.txt 22-Jun-2023 16:51 108151 dmsp_17_ephemeris_20180227.txt 22-Jun-2023 16:51 108062 dmsp_18_ephemeris_20180227.txt 22-Jun-2023 16:51 108015