../ dmsp_15_ephemeris_20121004.txt 22-Jun-2023 16:33 109578 dmsp_16_ephemeris_20121004.txt 22-Jun-2023 16:33 109606 dmsp_17_ephemeris_20121004.txt 22-Jun-2023 16:33 109646 dmsp_18_ephemeris_20121004.txt 22-Jun-2023 16:33 109668