../ dmsp_15_ephemeris_20111018.txt 22-Jun-2023 16:12 109491 dmsp_16_ephemeris_20111018.txt 22-Jun-2023 16:12 109613 dmsp_17_ephemeris_20111018.txt 22-Jun-2023 16:12 109563 dmsp_18_ephemeris_20111018.txt 22-Jun-2023 16:12 109626