../ dmsp_15_ephemeris_20170611.txt 22-Jun-2023 16:49 109398 dmsp_16_ephemeris_20170611.txt 22-Jun-2023 16:49 109601 dmsp_17_ephemeris_20170611.txt 22-Jun-2023 16:49 109640 dmsp_18_ephemeris_20170611.txt 22-Jun-2023 16:49 109554