../ dmsp_15_ephemeris_20130117.txt 22-Jun-2023 00:21 108033 dmsp_16_ephemeris_20130117.txt 22-Jun-2023 00:21 107864 dmsp_17_ephemeris_20130117.txt 22-Jun-2023 00:21 107936 dmsp_18_ephemeris_20130117.txt 22-Jun-2023 00:21 107921