../ dmsp_15_ephemeris_20190314.txt 22-Jun-2023 00:40 108215 dmsp_16_ephemeris_20190314.txt 22-Jun-2023 00:40 108169 dmsp_17_ephemeris_20190314.txt 22-Jun-2023 00:40 107974 dmsp_18_ephemeris_20190314.txt 22-Jun-2023 00:40 108152