../ dmsp_15_ephemeris_20170123.txt 22-Jun-2023 00:33 108052 dmsp_16_ephemeris_20170123.txt 22-Jun-2023 00:33 107977 dmsp_17_ephemeris_20170123.txt 22-Jun-2023 00:33 108051 dmsp_18_ephemeris_20170123.txt 22-Jun-2023 00:33 107948