../ dmsp_15_ephemeris_20120210.txt 22-Jun-2023 00:19 108144 dmsp_16_ephemeris_20120210.txt 22-Jun-2023 00:19 108109 dmsp_17_ephemeris_20120210.txt 22-Jun-2023 00:19 107990 dmsp_18_ephemeris_20120210.txt 22-Jun-2023 00:19 107956