../ dmsp_15_ephemeris_20120904.txt 22-Jun-2023 16:33 109545 dmsp_16_ephemeris_20120904.txt 22-Jun-2023 16:33 109721 dmsp_17_ephemeris_20120904.txt 22-Jun-2023 16:33 109692 dmsp_18_ephemeris_20120904.txt 22-Jun-2023 16:33 109688