../ dmsp_15_ephemeris_20180302.txt 22-Jun-2023 00:36 108101 dmsp_16_ephemeris_20180302.txt 22-Jun-2023 00:36 108279 dmsp_17_ephemeris_20180302.txt 22-Jun-2023 00:36 108178 dmsp_18_ephemeris_20180302.txt 22-Jun-2023 00:36 108050