../ dmsp_15_ephemeris_20120324.txt 22-Jun-2023 00:19 108193 dmsp_16_ephemeris_20120324.txt 22-Jun-2023 00:19 108295 dmsp_17_ephemeris_20120324.txt 22-Jun-2023 00:19 108218 dmsp_18_ephemeris_20120324.txt 22-Jun-2023 00:19 108287