../ dmsp_15_ephemeris_20190328.txt 22-Jun-2023 00:40 108274 dmsp_16_ephemeris_20190328.txt 22-Jun-2023 00:40 108179 dmsp_17_ephemeris_20190328.txt 22-Jun-2023 00:40 108147 dmsp_18_ephemeris_20190328.txt 22-Jun-2023 00:40 108210