../ dmsp_15_ephemeris_20211017.txt 22-Jun-2023 17:04 109505 dmsp_16_ephemeris_20211017.txt 22-Jun-2023 17:04 109617 dmsp_17_ephemeris_20211017.txt 22-Jun-2023 17:04 109470 dmsp_18_ephemeris_20211017.txt 22-Jun-2023 17:04 109630