../ dmsp_15_ephemeris_20190113.txt 22-Jun-2023 00:39 108045 dmsp_16_ephemeris_20190113.txt 22-Jun-2023 00:39 107931 dmsp_17_ephemeris_20190113.txt 22-Jun-2023 00:39 107878 dmsp_18_ephemeris_20190113.txt 22-Jun-2023 00:39 107776