../ dmsp_15_ephemeris_20121117.txt 22-Jun-2023 00:21 109456 dmsp_16_ephemeris_20121117.txt 22-Jun-2023 00:21 109403 dmsp_17_ephemeris_20121117.txt 22-Jun-2023 00:21 109345 dmsp_18_ephemeris_20121117.txt 22-Jun-2023 00:21 109366