../ dmsp_15_ephemeris_20190220.txt 22-Jun-2023 00:39 108064 dmsp_16_ephemeris_20190220.txt 22-Jun-2023 00:39 108183 dmsp_17_ephemeris_20190220.txt 22-Jun-2023 00:39 108099 dmsp_18_ephemeris_20190220.txt 22-Jun-2023 00:39 108114