../ dmsp_15_ephemeris_20120624.txt 22-Jun-2023 00:20 109503 dmsp_16_ephemeris_20120624.txt 22-Jun-2023 00:20 109608 dmsp_17_ephemeris_20120624.txt 22-Jun-2023 00:20 109599 dmsp_18_ephemeris_20120624.txt 22-Jun-2023 00:20 109487