../ dmsp_15_ephemeris_20170120.txt 22-Jun-2023 00:33 108063 dmsp_16_ephemeris_20170120.txt 22-Jun-2023 00:33 107978 dmsp_17_ephemeris_20170120.txt 22-Jun-2023 00:33 107948 dmsp_18_ephemeris_20170120.txt 22-Jun-2023 00:33 107929