../ dmsp_15_ephemeris_20170528.txt 22-Jun-2023 00:34 109431 dmsp_16_ephemeris_20170528.txt 22-Jun-2023 00:34 109538 dmsp_17_ephemeris_20170528.txt 22-Jun-2023 00:34 109572 dmsp_18_ephemeris_20170528.txt 22-Jun-2023 00:34 109667