../ dmsp_15_ephemeris_20130427.txt 22-Jun-2023 00:22 109606 dmsp_16_ephemeris_20130427.txt 22-Jun-2023 00:22 109603 dmsp_17_ephemeris_20130427.txt 22-Jun-2023 00:22 109666 dmsp_18_ephemeris_20130427.txt 22-Jun-2023 00:22 109618