../ dmsp_15_ephemeris_20170914.txt 22-Jun-2023 16:50 109497 dmsp_16_ephemeris_20170914.txt 22-Jun-2023 16:50 109671 dmsp_17_ephemeris_20170914.txt 22-Jun-2023 16:50 109660 dmsp_18_ephemeris_20170914.txt 22-Jun-2023 16:50 109546