../ dmsp_15_ephemeris_20190224.txt 22-Jun-2023 16:30 108239 dmsp_16_ephemeris_20190224.txt 22-Jun-2023 16:30 108102 dmsp_17_ephemeris_20190224.txt 22-Jun-2023 16:30 108118 dmsp_18_ephemeris_20190224.txt 22-Jun-2023 16:30 108064