../ dmsp_15_ephemeris_20180403.txt 22-Jun-2023 16:52 108134 dmsp_16_ephemeris_20180403.txt 22-Jun-2023 16:52 108182 dmsp_17_ephemeris_20180403.txt 22-Jun-2023 16:52 108188 dmsp_18_ephemeris_20180403.txt 22-Jun-2023 16:52 108187