../ dmsp_15_ephemeris_20211017.txt 22-Jun-2023 00:48 109505 dmsp_16_ephemeris_20211017.txt 22-Jun-2023 00:48 109617 dmsp_17_ephemeris_20211017.txt 22-Jun-2023 00:48 109470 dmsp_18_ephemeris_20211017.txt 22-Jun-2023 00:48 109630