../ dmsp_15_ephemeris_20130228.txt 22-Jun-2023 00:21 108217 dmsp_16_ephemeris_20130228.txt 22-Jun-2023 00:21 108141 dmsp_17_ephemeris_20130228.txt 22-Jun-2023 00:21 108060 dmsp_18_ephemeris_20130228.txt 22-Jun-2023 00:21 107967