../ dmsp_15_ephemeris_20200731.txt 22-Jun-2023 00:44 109596 dmsp_16_ephemeris_20200731.txt 22-Jun-2023 00:44 109605 dmsp_17_ephemeris_20200731.txt 22-Jun-2023 00:44 109688 dmsp_18_ephemeris_20200731.txt 22-Jun-2023 00:44 109619