../ dmsp_15_ephemeris_20120320.txt 22-Jun-2023 00:19 108176 dmsp_16_ephemeris_20120320.txt 22-Jun-2023 00:19 108118 dmsp_17_ephemeris_20120320.txt 22-Jun-2023 00:19 108188 dmsp_18_ephemeris_20120320.txt 22-Jun-2023 00:19 108206