../ dmsp_15_ephemeris_20190624.txt 22-Jun-2023 16:56 109604 dmsp_16_ephemeris_20190624.txt 22-Jun-2023 16:56 109452 dmsp_17_ephemeris_20190624.txt 22-Jun-2023 16:56 109655 dmsp_18_ephemeris_20190624.txt 22-Jun-2023 16:56 109539