../ dmsp_15_ephemeris_20120412.txt 22-Jun-2023 00:19 109606 dmsp_16_ephemeris_20120412.txt 22-Jun-2023 00:19 109671 dmsp_17_ephemeris_20120412.txt 22-Jun-2023 00:19 109617 dmsp_18_ephemeris_20120412.txt 22-Jun-2023 00:19 109679