../ dmsp_15_ephemeris_20171101.txt 22-Jun-2023 00:35 109571 dmsp_16_ephemeris_20171101.txt 22-Jun-2023 00:35 109572 dmsp_17_ephemeris_20171101.txt 22-Jun-2023 00:35 109567 dmsp_18_ephemeris_20171101.txt 22-Jun-2023 00:35 109406