../ dmsp_15_ephemeris_20130211.txt 22-Jun-2023 00:21 108146 dmsp_16_ephemeris_20130211.txt 22-Jun-2023 00:21 108048 dmsp_17_ephemeris_20130211.txt 22-Jun-2023 00:21 108037 dmsp_18_ephemeris_20130211.txt 22-Jun-2023 00:21 108077