../ dmsp_15_ephemeris_20171102.txt 22-Jun-2023 00:35 109517 dmsp_16_ephemeris_20171102.txt 22-Jun-2023 00:35 109470 dmsp_17_ephemeris_20171102.txt 22-Jun-2023 00:35 109387 dmsp_18_ephemeris_20171102.txt 22-Jun-2023 00:35 109342