../ dmsp_15_ephemeris_20191017.txt 22-Jun-2023 16:57 109626 dmsp_16_ephemeris_20191017.txt 22-Jun-2023 16:57 109695 dmsp_17_ephemeris_20191017.txt 22-Jun-2023 16:57 109571 dmsp_18_ephemeris_20191017.txt 22-Jun-2023 16:57 109494