../ dmsp_15_ephemeris_20110714.txt 22-Jun-2023 00:18 109593 dmsp_16_ephemeris_20110714.txt 22-Jun-2023 00:18 109734 dmsp_17_ephemeris_20110714.txt 22-Jun-2023 00:18 109623 dmsp_18_ephemeris_20110714.txt 22-Jun-2023 00:18 109755