../ dmsp_15_ephemeris_20200331.txt 22-Jun-2023 16:27 108185 dmsp_16_ephemeris_20200331.txt 22-Jun-2023 16:27 108261 dmsp_17_ephemeris_20200331.txt 22-Jun-2023 16:27 108177 dmsp_18_ephemeris_20200331.txt 22-Jun-2023 16:27 108093