../ dmsp_15_ephemeris_20171115.txt 22-Jun-2023 16:50 109374 dmsp_16_ephemeris_20171115.txt 22-Jun-2023 16:50 109376 dmsp_17_ephemeris_20171115.txt 22-Jun-2023 16:50 109476 dmsp_18_ephemeris_20171115.txt 22-Jun-2023 16:50 109359