../ dmsp_15_ephemeris_20130315.txt 22-Jun-2023 00:21 108246 dmsp_16_ephemeris_20130315.txt 22-Jun-2023 00:21 108183 dmsp_17_ephemeris_20130315.txt 22-Jun-2023 00:21 108164 dmsp_18_ephemeris_20130315.txt 22-Jun-2023 00:21 108168