../ dmsp_15_ephemeris_20211224.txt 22-Jun-2023 00:49 109387 dmsp_16_ephemeris_20211224.txt 22-Jun-2023 00:49 109269 dmsp_17_ephemeris_20211224.txt 22-Jun-2023 00:49 109177 dmsp_18_ephemeris_20211224.txt 22-Jun-2023 00:49 109316