../ dmsp_15_ephemeris_20200906.txt 22-Jun-2023 00:44 109616 dmsp_16_ephemeris_20200906.txt 22-Jun-2023 00:44 109653 dmsp_17_ephemeris_20200906.txt 22-Jun-2023 00:44 109737 dmsp_18_ephemeris_20200906.txt 22-Jun-2023 00:45 109597