../ dmsp_15_ephemeris_20120602.txt 22-Jun-2023 00:20 109534 dmsp_16_ephemeris_20120602.txt 22-Jun-2023 00:20 109566 dmsp_17_ephemeris_20120602.txt 22-Jun-2023 00:20 109520 dmsp_18_ephemeris_20120602.txt 22-Jun-2023 00:20 109600