../ dmsp_15_ephemeris_20120213.txt 22-Jun-2023 00:19 108104 dmsp_16_ephemeris_20120213.txt 22-Jun-2023 00:19 108066 dmsp_17_ephemeris_20120213.txt 22-Jun-2023 00:19 108121 dmsp_18_ephemeris_20120213.txt 22-Jun-2023 00:19 108054