../ dmsp_15_ephemeris_20180118.txt 22-Jun-2023 00:36 107943 dmsp_16_ephemeris_20180118.txt 22-Jun-2023 00:36 107993 dmsp_17_ephemeris_20180118.txt 22-Jun-2023 00:36 107945 dmsp_18_ephemeris_20180118.txt 22-Jun-2023 00:36 107899