../ dmsp_15_ephemeris_20150729.txt 10-Sep-2021 18:45 109420 dmsp_16_ephemeris_20150729.txt 10-Sep-2021 18:45 109614 dmsp_17_ephemeris_20150729.txt 10-Sep-2021 18:45 109692 dmsp_18_ephemeris_20150729.txt 10-Sep-2021 18:45 109647 dmsp_19_ephemeris_20150729.txt 10-Sep-2021 18:45 109677