../ dmsp_15_ephemeris_20150919.txt 22-Jun-2023 16:21 109612 dmsp_16_ephemeris_20150919.txt 22-Jun-2023 16:21 109601 dmsp_17_ephemeris_20150919.txt 22-Jun-2023 16:21 109643 dmsp_18_ephemeris_20150919.txt 22-Jun-2023 16:21 109619 dmsp_19_ephemeris_20150919.txt 22-Jun-2023 16:21 109515