../ dmsp_15_ephemeris_20180222.txt 22-Jun-2023 16:51 108184 dmsp_16_ephemeris_20180222.txt 22-Jun-2023 16:51 108118 dmsp_17_ephemeris_20180222.txt 22-Jun-2023 16:51 108149 dmsp_18_ephemeris_20180222.txt 22-Jun-2023 16:51 108080