../ dmsp_15_ephemeris_20120908.txt 22-Jun-2023 00:20 109617 dmsp_16_ephemeris_20120908.txt 22-Jun-2023 00:20 109705 dmsp_17_ephemeris_20120908.txt 22-Jun-2023 00:20 109626 dmsp_18_ephemeris_20120908.txt 22-Jun-2023 00:20 109607