../ dmsp_15_ephemeris_20201209.txt 22-Jun-2023 00:45 109373 dmsp_16_ephemeris_20201209.txt 22-Jun-2023 00:45 109460 dmsp_17_ephemeris_20201209.txt 22-Jun-2023 00:45 109236 dmsp_18_ephemeris_20201209.txt 22-Jun-2023 00:45 109311