../ dmsp_15_ephemeris_20171124.txt 22-Jun-2023 00:35 109497 dmsp_16_ephemeris_20171124.txt 22-Jun-2023 00:35 109302 dmsp_17_ephemeris_20171124.txt 22-Jun-2023 00:35 109391 dmsp_18_ephemeris_20171124.txt 22-Jun-2023 00:35 109338