../ dmsp_15_ephemeris_20110508.txt 22-Jun-2023 00:17 109643 dmsp_16_ephemeris_20110508.txt 22-Jun-2023 00:17 109648 dmsp_17_ephemeris_20110508.txt 22-Jun-2023 00:17 109690 dmsp_18_ephemeris_20110508.txt 22-Jun-2023 00:17 109619