../ dmsp_15_ephemeris_20180905.txt 22-Jun-2023 16:29 109628 dmsp_16_ephemeris_20180905.txt 22-Jun-2023 16:29 109629 dmsp_17_ephemeris_20180905.txt 22-Jun-2023 16:29 109596 dmsp_18_ephemeris_20180905.txt 22-Jun-2023 16:29 109573