../ dmsp_15_ephemeris_20120907.txt 22-Jun-2023 00:20 109641 dmsp_16_ephemeris_20120907.txt 22-Jun-2023 00:20 109630 dmsp_17_ephemeris_20120907.txt 22-Jun-2023 00:20 109725 dmsp_18_ephemeris_20120907.txt 22-Jun-2023 00:20 109537