../ dmsp_15_ephemeris_20181209.txt 22-Jun-2023 16:29 109482 dmsp_16_ephemeris_20181209.txt 22-Jun-2023 16:29 109359 dmsp_17_ephemeris_20181209.txt 22-Jun-2023 16:29 109227 dmsp_18_ephemeris_20181209.txt 22-Jun-2023 16:29 109313