../ dmsp_15_ephemeris_20130122.txt 22-Jun-2023 00:21 108013 dmsp_16_ephemeris_20130122.txt 22-Jun-2023 00:21 108004 dmsp_17_ephemeris_20130122.txt 22-Jun-2023 00:21 108050 dmsp_18_ephemeris_20130122.txt 22-Jun-2023 00:21 107993