../ dmsp_15_ephemeris_20111116.txt 22-Jun-2023 00:18 109367 dmsp_16_ephemeris_20111116.txt 22-Jun-2023 00:18 109307 dmsp_17_ephemeris_20111116.txt 22-Jun-2023 00:18 109471 dmsp_18_ephemeris_20111116.txt 22-Jun-2023 00:18 109295