../ dmsp_15_ephemeris_20120809.txt 22-Jun-2023 00:20 109562 dmsp_16_ephemeris_20120809.txt 22-Jun-2023 00:20 109631 dmsp_17_ephemeris_20120809.txt 22-Jun-2023 00:20 109674 dmsp_18_ephemeris_20120809.txt 22-Jun-2023 00:20 109707