../ dmsp_15_ephemeris_20180814.txt 22-Jun-2023 00:38 109602 dmsp_16_ephemeris_20180814.txt 22-Jun-2023 00:38 109576 dmsp_17_ephemeris_20180814.txt 22-Jun-2023 00:38 109582 dmsp_18_ephemeris_20180814.txt 22-Jun-2023 00:38 109723