../ dmsp_15_ephemeris_20121125.txt 22-Jun-2023 00:21 109404 dmsp_16_ephemeris_20121125.txt 22-Jun-2023 00:21 109328 dmsp_17_ephemeris_20121125.txt 22-Jun-2023 00:21 109346 dmsp_18_ephemeris_20121125.txt 22-Jun-2023 00:21 109407