../ dmsp_15_ephemeris_20170503.txt 22-Jun-2023 00:34 109471 dmsp_16_ephemeris_20170503.txt 22-Jun-2023 00:34 109473 dmsp_17_ephemeris_20170503.txt 22-Jun-2023 00:34 109701 dmsp_18_ephemeris_20170503.txt 22-Jun-2023 00:34 109533