../ dmsp_15_ephemeris_20120621.txt 22-Jun-2023 00:20 109534 dmsp_16_ephemeris_20120621.txt 22-Jun-2023 00:20 109565 dmsp_17_ephemeris_20120621.txt 22-Jun-2023 00:20 109717 dmsp_18_ephemeris_20120621.txt 22-Jun-2023 00:20 109595