../ dmsp_15_ephemeris_20220402.txt 22-Jun-2023 00:50 108254 dmsp_16_ephemeris_20220402.txt 22-Jun-2023 00:50 108295 dmsp_17_ephemeris_20220402.txt 22-Jun-2023 00:50 108178 dmsp_18_ephemeris_20220402.txt 22-Jun-2023 00:50 108180