../ dmsp_15_ephemeris_20190528.txt 22-Jun-2023 00:40 109431 dmsp_16_ephemeris_20190528.txt 22-Jun-2023 00:40 109528 dmsp_17_ephemeris_20190528.txt 22-Jun-2023 00:40 109599 dmsp_18_ephemeris_20190528.txt 22-Jun-2023 00:40 109509