../ dmsp_15_ephemeris_20200925.txt 22-Jun-2023 00:45 109585 dmsp_16_ephemeris_20200925.txt 22-Jun-2023 00:45 109658 dmsp_17_ephemeris_20200925.txt 22-Jun-2023 00:45 109631 dmsp_18_ephemeris_20200925.txt 22-Jun-2023 00:45 109733