../ dmsp_15_ephemeris_20110722.txt 22-Jun-2023 00:18 109582 dmsp_16_ephemeris_20110722.txt 22-Jun-2023 00:18 109602 dmsp_17_ephemeris_20110722.txt 22-Jun-2023 00:18 109678 dmsp_18_ephemeris_20110722.txt 22-Jun-2023 00:18 109801