../ dmsp_15_ephemeris_20190329.txt 22-Jun-2023 16:55 108216 dmsp_16_ephemeris_20190329.txt 22-Jun-2023 16:55 108281 dmsp_17_ephemeris_20190329.txt 22-Jun-2023 16:55 108117 dmsp_18_ephemeris_20190329.txt 22-Jun-2023 16:55 108245