../ dmsp_15_ephemeris_20201028.txt 22-Jun-2023 00:45 109579 dmsp_16_ephemeris_20201028.txt 22-Jun-2023 00:45 109469 dmsp_17_ephemeris_20201028.txt 22-Jun-2023 00:45 109468 dmsp_18_ephemeris_20201028.txt 22-Jun-2023 00:45 109523