../ dmsp_15_ephemeris_20180622.txt 22-Jun-2023 16:28 109457 dmsp_16_ephemeris_20180622.txt 22-Jun-2023 16:28 109484 dmsp_17_ephemeris_20180622.txt 22-Jun-2023 16:28 109667 dmsp_18_ephemeris_20180622.txt 22-Jun-2023 16:28 109614