../ dmsp_15_ephemeris_20211105.txt 22-Jun-2023 17:04 109491 dmsp_16_ephemeris_20211105.txt 22-Jun-2023 17:04 109564 dmsp_17_ephemeris_20211105.txt 22-Jun-2023 17:04 109332 dmsp_18_ephemeris_20211105.txt 22-Jun-2023 17:04 109448