../ dmsp_15_ephemeris_20180128.txt 22-Jun-2023 00:36 108007 dmsp_16_ephemeris_20180128.txt 22-Jun-2023 00:36 107988 dmsp_17_ephemeris_20180128.txt 22-Jun-2023 00:36 107935 dmsp_18_ephemeris_20180128.txt 22-Jun-2023 00:36 108000