../ dmsp_15_ephemeris_20120407.txt 22-Jun-2023 00:19 108238 dmsp_16_ephemeris_20120407.txt 22-Jun-2023 00:19 108229 dmsp_17_ephemeris_20120407.txt 22-Jun-2023 00:19 108275 dmsp_18_ephemeris_20120407.txt 22-Jun-2023 00:19 108274