../ dmsp_15_ephemeris_20130402.txt 22-Jun-2023 00:21 108119 dmsp_16_ephemeris_20130402.txt 22-Jun-2023 00:21 108163 dmsp_17_ephemeris_20130402.txt 22-Jun-2023 00:21 108289 dmsp_18_ephemeris_20130402.txt 22-Jun-2023 00:21 108246