../ dmsp_15_ephemeris_20110414.txt 22-Jun-2023 00:17 109628 dmsp_16_ephemeris_20110414.txt 22-Jun-2023 00:17 109692 dmsp_17_ephemeris_20110414.txt 22-Jun-2023 00:17 109694 dmsp_18_ephemeris_20110414.txt 22-Jun-2023 00:17 109745