../ dmsp_15_ephemeris_20220418.txt 22-Jun-2023 00:50 109660 dmsp_16_ephemeris_20220418.txt 22-Jun-2023 00:50 109625 dmsp_17_ephemeris_20220418.txt 22-Jun-2023 00:50 109686 dmsp_18_ephemeris_20220418.txt 22-Jun-2023 00:50 109658