../ dmsp_15_ephemeris_20210402.txt 22-Jun-2023 17:02 108184 dmsp_16_ephemeris_20210402.txt 22-Jun-2023 17:02 108324 dmsp_17_ephemeris_20210402.txt 22-Jun-2023 17:02 108241 dmsp_18_ephemeris_20210402.txt 22-Jun-2023 17:02 108198