../ dmsp_15_ephemeris_20120321.txt 22-Jun-2023 00:19 108194 dmsp_16_ephemeris_20120321.txt 22-Jun-2023 00:19 108250 dmsp_17_ephemeris_20120321.txt 22-Jun-2023 00:19 108240 dmsp_18_ephemeris_20120321.txt 22-Jun-2023 00:19 108205