../ dmsp_15_ephemeris_20190628.txt 22-Jun-2023 16:25 109407 dmsp_16_ephemeris_20190628.txt 22-Jun-2023 16:25 109506 dmsp_17_ephemeris_20190628.txt 22-Jun-2023 16:25 109580 dmsp_18_ephemeris_20190628.txt 22-Jun-2023 16:25 109529