../ dmsp_15_ephemeris_20131022.txt 22-Jun-2023 00:23 109406 dmsp_16_ephemeris_20131022.txt 22-Jun-2023 00:23 109608 dmsp_17_ephemeris_20131022.txt 22-Jun-2023 00:23 109580 dmsp_18_ephemeris_20131022.txt 22-Jun-2023 00:23 109493