../ dmsp_15_ephemeris_20120304.txt 22-Jun-2023 00:19 108043 dmsp_16_ephemeris_20120304.txt 22-Jun-2023 00:19 108250 dmsp_17_ephemeris_20120304.txt 22-Jun-2023 00:19 108172 dmsp_18_ephemeris_20120304.txt 22-Jun-2023 00:19 108109