../ dmsp_15_ephemeris_20190324.txt 22-Jun-2023 16:55 108161 dmsp_16_ephemeris_20190324.txt 22-Jun-2023 16:55 108263 dmsp_17_ephemeris_20190324.txt 22-Jun-2023 16:55 108350 dmsp_18_ephemeris_20190324.txt 22-Jun-2023 16:55 108215