../ dmsp_15_ephemeris_20190118.txt 22-Jun-2023 00:39 108086 dmsp_16_ephemeris_20190118.txt 22-Jun-2023 00:39 107951 dmsp_17_ephemeris_20190118.txt 22-Jun-2023 00:39 107913 dmsp_18_ephemeris_20190118.txt 22-Jun-2023 00:39 107886