../ dmsp_15_ephemeris_20201029.txt 22-Jun-2023 00:45 109564 dmsp_16_ephemeris_20201029.txt 22-Jun-2023 00:45 109497 dmsp_17_ephemeris_20201029.txt 22-Jun-2023 00:45 109523 dmsp_18_ephemeris_20201029.txt 22-Jun-2023 00:45 109517