../ dmsp_15_ephemeris_20211020.txt 22-Jun-2023 00:48 109714 dmsp_16_ephemeris_20211020.txt 22-Jun-2023 00:48 109605 dmsp_17_ephemeris_20211020.txt 22-Jun-2023 00:48 109529 dmsp_18_ephemeris_20211020.txt 22-Jun-2023 00:48 109560