../ dmsp_15_ephemeris_20190606.txt 22-Jun-2023 16:56 109588 dmsp_16_ephemeris_20190606.txt 22-Jun-2023 16:56 109550 dmsp_17_ephemeris_20190606.txt 22-Jun-2023 16:56 109573 dmsp_18_ephemeris_20190606.txt 22-Jun-2023 16:56 109539