../ dmsp_15_ephemeris_20171210.txt 22-Jun-2023 00:36 109486 dmsp_16_ephemeris_20171210.txt 22-Jun-2023 00:36 109276 dmsp_17_ephemeris_20171210.txt 22-Jun-2023 00:36 109263 dmsp_18_ephemeris_20171210.txt 22-Jun-2023 00:36 109261