../ dmsp_15_ephemeris_20150716.txt 10-Sep-2021 18:45 109448 dmsp_16_ephemeris_20150716.txt 10-Sep-2021 18:45 109500 dmsp_17_ephemeris_20150716.txt 10-Sep-2021 18:45 109612 dmsp_18_ephemeris_20150716.txt 10-Sep-2021 18:45 109652 dmsp_19_ephemeris_20150716.txt 10-Sep-2021 18:45 109566