../ dmsp_15_ephemeris_20190927.txt 22-Jun-2023 00:41 109725 dmsp_16_ephemeris_20190927.txt 22-Jun-2023 00:41 109673 dmsp_17_ephemeris_20190927.txt 22-Jun-2023 00:41 109552 dmsp_18_ephemeris_20190927.txt 22-Jun-2023 00:41 109539